# Bug Reports **URL:** https://prepomax.discourse.group/c/bug-reports/8.md?page=2 [Latest](https://prepomax.discourse.group/latest.md) · [Categories](https://prepomax.discourse.group/categories.md) · [Tags](https://prepomax.discourse.group/tags.md) **Page:** 3 --- ## [\*Submodel with multi loadcases, input deck format, maybe not right (?)](https://prepomax.discourse.group/t/submodel-with-multi-loadcases-input-deck-format-maybe-not-right/2985)
**Author:** [@Sound\_Spinning](https://prepomax.discourse.group/u/Sound_Spinning)\ **Replies:** 10\ **Last updated:** [January 18, 2026, 5:22pm UTC](https://prepomax.discourse.group/t/submodel-with-multi-loadcases-input-deck-format-maybe-not-right/2985 "2026-01-18T17:22:49Z")
PrePoMax V2.3.0 I’ve setup a Submodel with multiple loadcases, which exist in my Global model. When I look at the input deck written by PrePoMax, the 2 node sets used in each loadcase get repeated? I’m not sure this w… --- ## [Perturbation parameter has propagate](https://prepomax.discourse.group/t/perturbation-parameter-has-propagate/3083)
**Author:** [@ANYS](https://prepomax.discourse.group/u/ANYS)\ **Replies:** 3\ **Last updated:** [January 18, 2026, 5:22pm UTC](https://prepomax.discourse.group/t/perturbation-parameter-has-propagate/3083 "2026-01-18T17:22:07Z")
Hi, I have create a new step when having a previous Buckling step and the perturbation parameter has propagate too giving an incompatibility error. Not sure if that’s intentional. \*Step, Perturbation, Nlgeom, Inc=200 … --- ## [Nonlinear materials trigger Nonlinear analysis](https://prepomax.discourse.group/t/nonlinear-materials-trigger-nonlinear-analysis/3102)
**Author:** [@ANYS](https://prepomax.discourse.group/u/ANYS)\ **Replies:** 7\ **Last updated:** [January 18, 2026, 5:20pm UTC](https://prepomax.discourse.group/t/nonlinear-materials-trigger-nonlinear-analysis/3102 "2026-01-18T17:20:52Z")
Hi Nonlinear materials in the .inp trigger Nonlinear analysis although they may not haven’t been assigned. I think it would be convenient to remove them before starting the analysis. Regards --- ## [.pmx file becomes corrupt after "Save As"](https://prepomax.discourse.group/t/pmx-file-becomes-corrupt-after-save-as/3122)
**Author:** [@barnic](https://prepomax.discourse.group/u/barnic)\ **Replies:** 4\ **Last updated:** [January 18, 2026, 5:18pm UTC](https://prepomax.discourse.group/t/pmx-file-becomes-corrupt-after-save-as/3122 "2026-01-18T17:18:53Z")
After running a simulation and seeing results, and previously saved the file, the “Save As” button is used to create a copy so edits can be done to another file. Upon trying to open the original or the new file, the erro… --- ## [STEP-Import with missing surfaces](https://prepomax.discourse.group/t/step-import-with-missing-surfaces/3180)
**Author:** [@Michel](https://prepomax.discourse.group/u/Michel)\ **Replies:** 33\ **Last updated:** [January 18, 2026, 5:16pm UTC](https://prepomax.discourse.group/t/step-import-with-missing-surfaces/3180 "2026-01-18T17:16:10Z")
Hi guys! First of all, I want to thank you for this forum and for PrePoMax itself :slight\_smile: I have been working with this program for six months and have not had any major issues. However, after updating the geome… --- ## [Version 2.4 errors with searching for contact pairs](https://prepomax.discourse.group/t/version-2-4-errors-with-searching-for-contact-pairs/3172)
**Author:** [@lukerickert](https://prepomax.discourse.group/u/lukerickert)\ **Replies:** 2\ **Last updated:** [January 18, 2026, 5:03pm UTC](https://prepomax.discourse.group/t/version-2-4-errors-with-searching-for-contact-pairs/3172 "2026-01-18T17:03:19Z")
As usually I am working with surfaces and having issues. When I run the same model on 2.3 it works as expected but not in 2.4. PPM2\_4\_TEST.pmx (264.9 KB) --- ## [Strange message / CHAIN](https://prepomax.discourse.group/t/strange-message-chain/3189)
**Author:** [@MisiaKu](https://prepomax.discourse.group/u/MisiaKu)\ **Replies:** 8\ **Last updated:** [January 17, 2026, 8:50am UTC](https://prepomax.discourse.group/t/strange-message-chain/3189 "2026-01-17T08:50:38Z")
When I run the calculations, I get this message: --- ## [Hide result part](https://prepomax.discourse.group/t/hide-result-part/3132)
**Author:** [@Guslan](https://prepomax.discourse.group/u/Guslan)\ **Replies:** 3\ **Last updated:** [December 16, 2025, 4:39pm UTC](https://prepomax.discourse.group/t/hide-result-part/3132 "2025-12-16T16:39:17Z")
Good Day, I’ve tried to make deck strength analysis for a barge where Container loaded trailer is moving on top of deck. For the sake of simplicity, i only analyse 1 tire which has maximum force. after running the anal… --- ## [Plastic Data points plot curve](https://prepomax.discourse.group/t/plastic-data-points-plot-curve/3130)
**Author:** [@slv](https://prepomax.discourse.group/u/slv)\ **Replies:** 6\ **Last updated:** [December 16, 2025, 9:35am UTC](https://prepomax.discourse.group/t/plastic-data-points-plot-curve/3130 "2025-12-16T09:35:55Z")
When entering a strain value under the Plastic tab and attempting to plot the curve, the graph is displayed incorrectly. This issue did not occur in previous versions of PrePoMax. Has something to do with the temp axis: … --- ## [Meshing failure crashes PPM](https://prepomax.discourse.group/t/meshing-failure-crashes-ppm/3128)
**Author:** [@andnee](https://prepomax.discourse.group/u/andnee)\ **Replies:** 2\ **Last updated:** [December 6, 2025, 9:55pm UTC](https://prepomax.discourse.group/t/meshing-failure-crashes-ppm/3128 "2025-12-06T21:55:30Z")
Hi, I experience this fatal error in PPM 2.4.2: when meshing (specifically remeshing with a different element type) a model part and meshing fails, the part remains visible in the FEM tab, but it’s not really there becau… --- ## [Utilities to handle ccx issues with shells in steady state dynamics](https://prepomax.discourse.group/t/utilities-to-handle-ccx-issues-with-shells-in-steady-state-dynamics/930)
**Author:** [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\ **Replies:** 6\ **Last updated:** [November 26, 2025, 3:03pm UTC](https://prepomax.discourse.group/t/utilities-to-handle-ccx-issues-with-shells-in-steady-state-dynamics/930 "2025-11-26T15:03:28Z")
Hi, when preparing a simple example of steady state dynamics analysis involving shell elements, I’ve encountered two issues that require specific workarounds in CalculiX: \*ERROR in complexfreq reading the eigenvect… --- ## [Error: "The work directory does not exist."](https://prepomax.discourse.group/t/error-the-work-directory-does-not-exist/3071)
**Author:** [@GB61](https://prepomax.discourse.group/u/GB61)\ **Replies:** 2\ **Last updated:** [November 6, 2025, 9:57pm UTC](https://prepomax.discourse.group/t/error-the-work-directory-does-not-exist/3071 "2025-11-06T21:57:44Z")
I am using v2.4.0. In settings I have set the .pmx folder as the work directory. After creating a new file, when I attempt to import a .STEP file, I get the error, “The work directory does not exist.” If the .pmx file i… --- ## [CELS Contact Energy](https://prepomax.discourse.group/t/cels-contact-energy/2762)
**Author:** [@ANYS](https://prepomax.discourse.group/u/ANYS)\ **Replies:** 8\ **Last updated:** [November 3, 2025, 7:55am UTC](https://prepomax.discourse.group/t/cels-contact-energy/2762 "2025-11-03T07:55:41Z")
Hi, If have request diferent paramenters to be output in the history Output and they all show up but CELS. Prepomax 2.3.3. Surface to Surfae interaction. Am I missing something? Regards --- ## [Import mmg file](https://prepomax.discourse.group/t/import-mmg-file/2966)
**Author:** [@JulesMazari](https://prepomax.discourse.group/u/JulesMazari)\ **Replies:** 4\ **Last updated:** [October 20, 2025, 8:55am UTC](https://prepomax.discourse.group/t/import-mmg-file/2966 "2025-10-20T08:55:14Z")
Hi, I’m trying to import mmg file mesh (\*.mesh) but it seens Prepomax has a very sensitive mesh format. I didn’t find any clear explanation about the mesh format (excpet from mmg website). Here some test files : mesh … --- ## [History windows close also closes prepomax](https://prepomax.discourse.group/t/history-windows-close-also-closes-prepomax/2921)
**Author:** [@ANYS](https://prepomax.discourse.group/u/ANYS)\ **Replies:** 5\ **Last updated:** [October 17, 2025, 10:14pm UTC](https://prepomax.discourse.group/t/history-windows-close-also-closes-prepomax/2921 "2025-10-17T22:14:14Z")
Hi If I select the whole dataset in the history output window and I press conctrol +c to copy, Prepomax 2.3.9 closes. Regards --- ## [Error when trying to run analysis on imported STEP](https://prepomax.discourse.group/t/error-when-trying-to-run-analysis-on-imported-step/2967)
**Author:** [@ena](https://prepomax.discourse.group/u/ena)\ **Replies:** 8\ **Last updated:** [October 16, 2025, 6:10am UTC](https://prepomax.discourse.group/t/error-when-trying-to-run-analysis-on-imported-step/2967 "2025-10-16T06:10:42Z")
Hi, I’m new to this software and trying to run an analysis on an imported STEP file. After setting up the analysis and clicking Run, the error below immediately pops up and I’m not sure where to go from here. I’m runnin… --- ## [Internal array cannot expand to greater than int32.MaxValue elements](https://prepomax.discourse.group/t/internal-array-cannot-expand-to-greater-than-int32-maxvalue-elements/2791)
**Author:** [@Paul18fr](https://prepomax.discourse.group/u/Paul18fr)\ **Replies:** 4\ **Last updated:** [October 15, 2025, 2:49pm UTC](https://prepomax.discourse.group/t/internal-array-cannot-expand-to-greater-than-int32-maxvalue-elements/2791 "2025-10-15T14:49:08Z")
Hi I was playing with Non-linear buckling tutorial ; everything went well except when I wanted to “save” resuls - see screenshot Note I ran the FEA twice (in case of file corruption); I used the latest dev release. … --- ## [FRD does not open when requesting output for specific nset](https://prepomax.discourse.group/t/frd-does-not-open-when-requesting-output-for-specific-nset/2773)
**Author:** [@Yorch70](https://prepomax.discourse.group/u/Yorch70)\ **Replies:** 6\ **Last updated:** [October 15, 2025, 2:48pm UTC](https://prepomax.discourse.group/t/frd-does-not-open-when-requesting-output-for-specific-nset/2773 "2025-10-15T14:48:56Z")
Hi everyone, I’m facing troubles when opening an frd in prepomax. This problem is related with the request of element output for an specific node set. I’m using the following line in the .inp: \*elfile, nset=nall s,sdv… --- ## [Potential Bug Applying Radial Displacement to Rigid Surface](https://prepomax.discourse.group/t/potential-bug-applying-radial-displacement-to-rigid-surface/2963)
**Author:** [@GB61](https://prepomax.discourse.group/u/GB61)\ **Replies:** 6\ **Last updated:** [October 9, 2025, 1:21pm UTC](https://prepomax.discourse.group/t/potential-bug-applying-radial-displacement-to-rigid-surface/2963 "2025-10-09T13:21:04Z")
I have applied Radial Displacements to parts of a model. The boundary constraint symbols point in the correct directions, but when the analysis is run, the displacements are applied relative to the global coordinate syst… --- ## [Errors during compound part operation](https://prepomax.discourse.group/t/errors-during-compound-part-operation/2887)
**Author:** [@lukerickert](https://prepomax.discourse.group/u/lukerickert)\ **Replies:** 2\ **Last updated:** [October 9, 2025, 1:18pm UTC](https://prepomax.discourse.group/t/errors-during-compound-part-operation/2887 "2025-10-09T13:18:37Z")
I am getting some errors making compound surface parts. It seems fairly random from what I can tell. --- ## [Text in results window appears dimmed after downloading version 2.3.9dev](https://prepomax.discourse.group/t/text-in-results-window-appears-dimmed-after-downloading-version-2-3-9dev/2970)
**Author:** [@FdoLorenzo](https://prepomax.discourse.group/u/FdoLorenzo)\ **Replies:** 9\ **Last updated:** [October 1, 2025, 6:46pm UTC](https://prepomax.discourse.group/t/text-in-results-window-appears-dimmed-after-downloading-version-2-3-9dev/2970 "2025-10-01T18:46:20Z")
I am running Windows 11 on a Microsoft Surface 11 pro. This is the version with the ARM processor. The app runs perfect but when I go to the results window the text is dimmed and not sharp as in my other computer that h… --- ## [Cirle center by 3 points / Between two points](https://prepomax.discourse.group/t/cirle-center-by-3-points-between-two-points/2984)
**Author:** [@Vitek\_SAA](https://prepomax.discourse.group/u/Vitek_SAA)\ **Replies:** 3\ **Last updated:** [September 26, 2025, 8:23am UTC](https://prepomax.discourse.group/t/cirle-center-by-3-points-between-two-points/2984 "2025-09-26T08:23:59Z")
When creating a Reference Point and choosing either Circle Center by 3 Points or Between 2 Points, there is no option to select the required nodes/points. This functionality is expected, as in other operations such as Pa… --- ## [Results not updated](https://prepomax.discourse.group/t/results-not-updated/2915)
**Author:** [@ANYS](https://prepomax.discourse.group/u/ANYS)\ **Replies:** 3\ **Last updated:** [September 9, 2025, 8:09am UTC](https://prepomax.discourse.group/t/results-not-updated/2915 "2025-09-09T08:09:26Z")
V.2.3.8 When Navigating through the different results, the titles change but not the value. --- ## [Performance Issue When Importing Large .inp File with STEP Command](https://prepomax.discourse.group/t/performance-issue-when-importing-large-inp-file-with-step-command/2908)
**Author:** [@Mesab](https://prepomax.discourse.group/u/Mesab)\ **Replies:** 12\ **Last updated:** [September 9, 2025, 6:27am UTC](https://prepomax.discourse.group/t/performance-issue-when-importing-large-inp-file-with-step-command/2908 "2025-09-09T06:27:12Z")
Dear PrePoMax team, I’m experiencing a performance issue when importing a large .inp file (around 100,000 elements). PrePoMax reads the file correctly, but the import takes a very long time only when the \*STEP section i… --- ## [Failed to re-open pmx file after save the file](https://prepomax.discourse.group/t/failed-to-re-open-pmx-file-after-save-the-file/2880)
**Author:** [@Guslan](https://prepomax.discourse.group/u/Guslan)\ **Replies:** 4\ **Last updated:** [July 26, 2025, 1:06am UTC](https://prepomax.discourse.group/t/failed-to-re-open-pmx-file-after-save-the-file/2880 "2025-07-26T01:06:08Z")
Dear Sir, I was failed to open my pmx file eventhough i can save it last time with successfull result. after that i switch to open the frd file (WA480-8) & it successfully open, i can now see my previous analysis. N… --- ## [Calculix Keyword Error in v.2.3.6](https://prepomax.discourse.group/t/calculix-keyword-error-in-v-2-3-6/2870)
**Author:** [@KilianK1](https://prepomax.discourse.group/u/KilianK1)\ **Replies:** 3\ **Last updated:** [July 25, 2025, 10:24am UTC](https://prepomax.discourse.group/t/calculix-keyword-error-in-v-2-3-6/2870 "2025-07-25T10:24:27Z")
Steps: Added CalculiX Keyword Ran Analysis (failed, no result) Model → Edit CalculiX Keywords Model: Composite\_Shell.pmx (1.3 MB) --- ## [Error while generating result animation](https://prepomax.discourse.group/t/error-while-generating-result-animation/2849)
**Author:** [@Rishabh](https://prepomax.discourse.group/u/Rishabh)\ **Replies:** 4\ **Last updated:** [July 16, 2025, 7:50am UTC](https://prepomax.discourse.group/t/error-while-generating-result-animation/2849 "2025-07-16T07:50:12Z")
Hello, I am getting this error while generating animation of my results. Link of the result file : Unique Download Link | WeTransfer I have used version 2.3 for performing simulation. I also tried the version 2.3.5… --- ## [Results file not loading](https://prepomax.discourse.group/t/results-file-not-loading/2741)
**Author:** [@belov](https://prepomax.discourse.group/u/belov)\ **Replies:** 10\ **Last updated:** [June 2, 2025, 8:30pm UTC](https://prepomax.discourse.group/t/results-file-not-loading/2741 "2025-06-02T20:30:51Z")
Results file not loading, ver.2.3.4dev. Ver 2.1.0 - ok And Run “History Outputs” - “Create” → Error Random\_vibration\_2.pmx (5.3 MB) --- ## [Long time animation cause program crashed](https://prepomax.discourse.group/t/long-time-animation-cause-program-crashed/2730)
**Author:** [@arthur314](https://prepomax.discourse.group/u/arthur314)\ **Replies:** 2\ **Last updated:** [May 26, 2025, 6:04pm UTC](https://prepomax.discourse.group/t/long-time-animation-cause-program-crashed/2730 "2025-05-26T18:04:44Z")
Running the animation for a long time, the program crashed --- ## [Behavior of the delete button "User Keywords"](https://prepomax.discourse.group/t/behavior-of-the-delete-button-user-keywords/2734)
**Author:** [@belov](https://prepomax.discourse.group/u/belov)\ **Replies:** 2\ **Last updated:** [May 28, 2025, 12:48pm UTC](https://prepomax.discourse.group/t/behavior-of-the-delete-button-user-keywords/2734 "2025-05-28T12:48:32Z")
When you click the “User Keywords” delete button, the “Calculix keyword editor” window closes (version 2.3.2 dev). However, in versions 1.1-1.4 everything works fine. [Previous page](https://prepomax.discourse.group/c/bug-reports/8.md?page=1) [Next page](https://prepomax.discourse.group/c/bug-reports/8.md?page=3)