# Bug Reports **URL:** https://prepomax.discourse.group/c/bug-reports/8.md [Latest](https://prepomax.discourse.group/latest.md) · [Categories](https://prepomax.discourse.group/categories.md) · [Tags](https://prepomax.discourse.group/tags.md) --- ## [About the Bug Reports category](https://prepomax.discourse.group/t/about-the-bug-reports-category/14)
**Author:** [@Matej](https://prepomax.discourse.group/u/Matej)\ **Replies:** 0
A category to report bugs despite the fact that there are none. Describe the problem with as many details as possible and attach the necessary files needed to reproduce the bug if possible. --- ## [Version 2.6.2 can't creat local mesh](https://prepomax.discourse.group/t/version-2-6-2-cant-creat-local-mesh/3699)
**Author:** [@Maxing](https://prepomax.discourse.group/u/Maxing)\ **Replies:** 5\ **Last updated:** [September 25, 2026, 9:07am UTC](https://prepomax.discourse.group/t/version-2-6-2-cant-creat-local-mesh/3699 "2026-09-25T09:07:04Z")
I created a local mesh size and Meshing Parameters, but the local mesh size can’t show normal, please help me.Thanks. Localmesh.pmx (2.9 MB) --- ## [FEMaster calculate error](https://prepomax.discourse.group/t/femaster-calculate-error/3694)
**Author:** [@Maxing](https://prepomax.discourse.group/u/Maxing)\ **Replies:** 15\ **Last updated:** [September 24, 2026, 2:52pm UTC](https://prepomax.discourse.group/t/femaster-calculate-error/3694 "2026-09-24T14:52:19Z")
I’m using the Femaster solver, and the preprocessor is prepomax V2.6.2. The calculation model gives errors—I’ve tried four times and got four different errors. Can you help me find the mistakes? Thanks! --- ## ["Failed with results" but results look normal](https://prepomax.discourse.group/t/failed-with-results-but-results-look-normal/3681)
**Author:** [@CosmoKramer](https://prepomax.discourse.group/u/CosmoKramer)\ **Replies:** 6\ **Last updated:** [September 24, 2026, 11:06am UTC](https://prepomax.discourse.group/t/failed-with-results-but-results-look-normal/3681 "2026-09-24T11:06:51Z")
I’m modelling a wall-slab intersection (v 2.5.0) and getting Failed with results but results look normal (graphically and numerically). First time facing such ‘error’. Anyone has any idea why this is happening? Screensho… --- ## [Version 2.6.0 under wine (Linux Fedora 44)](https://prepomax.discourse.group/t/version-2-6-0-under-wine-linux-fedora-44/3690)
**Author:** [@Mechgru](https://prepomax.discourse.group/u/Mechgru)\ **Replies:** 4\ **Last updated:** [September 23, 2026, 6:18pm UTC](https://prepomax.discourse.group/t/version-2-6-0-under-wine-linux-fedora-44/3690 "2026-09-23T18:18:35Z")
I tried running the latest version of PrePoMax under wine. I am using Fedora 44. From the command line, I get the following error: rod@echidna-fed-3:~/.wine/drive\_c/Program Files/PrePoMax/PrePoMax v2.6.0$ wine PrePoMax.… --- ## [Importation issue with version 2.6.2 dev](https://prepomax.discourse.group/t/importation-issue-with-version-2-6-2-dev/3683)
**Author:** [@Nemo](https://prepomax.discourse.group/u/Nemo)\ **Replies:** 1\ **Last updated:** [September 22, 2026, 3:24pm UTC](https://prepomax.discourse.group/t/importation-issue-with-version-2-6-2-dev/3683 "2026-09-22T15:24:10Z")
Hello, first thanks for the v2.6.2 dev ! Just a question, i tried to import a siple stp part from my desktop. On version v2.6.2 dev this message appears ! But when i tried on a previous version (v2.5.1 dev) it works… … --- ## [Error creating 2D models in v2.6.1 dev](https://prepomax.discourse.group/t/error-creating-2d-models-in-v2-6-1-dev/3623)
**Author:** [@Flare](https://prepomax.discourse.group/u/Flare)\ **Replies:** 4\ **Last updated:** [September 13, 2026, 11:25pm UTC](https://prepomax.discourse.group/t/error-creating-2d-models-in-v2-6-1-dev/3623 "2026-09-13T23:25:57Z")
When I try and create a new 2D model in this version it gives me the following error: This is before you even attempt to import any geometry. --- ## [Symmetry transformation](https://prepomax.discourse.group/t/symmetry-transformation/1328)
**Author:** [@m\_farrokh](https://prepomax.discourse.group/u/m_farrokh)\ **Replies:** 17\ **Last updated:** [September 11, 2026, 7:07pm UTC](https://prepomax.discourse.group/t/symmetry-transformation/1328 "2026-09-11T19:07:53Z")
Hi It seems that something is wrong with symmetry transformation in PrePoMax. I created a model to simulate a hollow plate under tension. Due to the X and Y symmetry planes only one quarter of it has been modeled as fol… --- ## [2D\_with\_kinematic\_coupling](https://prepomax.discourse.group/t/2d-with-kinematic-coupling/3605)
**Author:** [@Stathiskardaris](https://prepomax.discourse.group/u/Stathiskardaris)\ **Replies:** 7\ **Last updated:** [September 11, 2026, 6:48pm UTC](https://prepomax.discourse.group/t/2d-with-kinematic-coupling/3605 "2026-09-11T18:48:49Z")
Greetings group, I have an issue with 2 plates connected with kinematic coupling from the same reference node. When i apply explicit displacement to the ref. node, the displacement applies only to 1 plate. Any suggesti… --- ## [Message: Index and length must refer to a location within the string](https://prepomax.discourse.group/t/message-index-and-length-must-refer-to-a-location-within-the-string/3621)
**Author:** [@Maxing](https://prepomax.discourse.group/u/Maxing)\ **Replies:** 2\ **Last updated:** [September 11, 2026, 6:46pm UTC](https://prepomax.discourse.group/t/message-index-and-length-must-refer-to-a-location-within-the-string/3621 "2026-09-11T18:46:58Z")
--- ## [How can I plot the internal and kinematic energy in PrePoMax?](https://prepomax.discourse.group/t/how-can-i-plot-the-internal-and-kinematic-energy-in-prepomax/1654)
**Author:** [@Majid](https://prepomax.discourse.group/u/Majid)\ **Replies:** 16\ **Last updated:** [September 11, 2026, 6:46pm UTC](https://prepomax.discourse.group/t/how-can-i-plot-the-internal-and-kinematic-energy-in-prepomax/1654 "2026-09-11T18:46:33Z")
Hello, I hope you are doing well. As you know, there is a possibility to plot the internal and kinematic energy after finishing a simulation. Does anyone know how I can plot them in PrePoMax? --- ## [Error when opening results depending on element type (v2.6.0 & v2.6.2 dev)](https://prepomax.discourse.group/t/error-when-opening-results-depending-on-element-type-v2-6-0-v2-6-2-dev/3649)
**Author:** [@Baek](https://prepomax.discourse.group/u/Baek)\ **Replies:** 6\ **Last updated:** [September 11, 2026, 6:45pm UTC](https://prepomax.discourse.group/t/error-when-opening-results-depending-on-element-type-v2-6-0-v2-6-2-dev/3649 "2026-09-11T18:45:56Z")
Hello, everyone. This is my first post here. Recently, when clicking the “Results” button after completing a Static Analysis in the latest versions (v2.6.0 & v2.6.2.dev), I encounter the following error: The ele… --- ## [PPM crashes with very large result files when animating time increments](https://prepomax.discourse.group/t/ppm-crashes-with-very-large-result-files-when-animating-time-increments/3643)
**Author:** [@febing](https://prepomax.discourse.group/u/febing)\ **Replies:** 11\ **Last updated:** [September 11, 2026, 11:53am UTC](https://prepomax.discourse.group/t/ppm-crashes-with-very-large-result-files-when-animating-time-increments/3643 "2026-09-11T11:53:35Z")
Hello Matey, i have large result files with hundreds of increments. PPM crashes when it tries to animate that increments. Is it possible to upload such an file (\> 1GB zipped) to you? Best regards, Frank --- ## [PrePoMax v2.6.0 - The mesher is busy](https://prepomax.discourse.group/t/prepomax-v2-6-0-the-mesher-is-busy/3638)
**Author:** [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\ **Replies:** 10\ **Last updated:** [September 2, 2026, 5:07pm UTC](https://prepomax.discourse.group/t/prepomax-v2-6-0-the-mesher-is-busy/3638 "2026-09-02T17:07:38Z")
Hi, I just downloaded PrePoMax v2.6.0 stable. And I keep getting errors like this when importing any geometry from .step: beam.zip (2.2 KB) --- ## [Mesh setup error key not found in the dictionary](https://prepomax.discourse.group/t/mesh-setup-error-key-not-found-in-the-dictionary/3629)
**Author:** [@Ante](https://prepomax.discourse.group/u/Ante)\ **Replies:** 2\ **Last updated:** [September 2, 2026, 11:32am UTC](https://prepomax.discourse.group/t/mesh-setup-error-key-not-found-in-the-dictionary/3629 "2026-09-02T11:32:46Z")
Hi all, New user here. I have 2 beams that i want to thick shell mesh. When I try to go to the mesh setup and select the parts and get it to run I get: “The given key ‘part name’ was not present in the dictionary” I… --- ## [Resolving display scaling problems in PrePoMax v2.5.0 on Windows 11](https://prepomax.discourse.group/t/resolving-display-scaling-problems-in-prepomax-v2-5-0-on-windows-11/3468)
**Author:** [@Shah](https://prepomax.discourse.group/u/Shah)\ **Replies:** 4\ **Last updated:** [August 29, 2026, 6:19pm UTC](https://prepomax.discourse.group/t/resolving-display-scaling-problems-in-prepomax-v2-5-0-on-windows-11/3468 "2026-08-29T18:19:32Z")
Hi All, I was recently trying to migrate to PrePoMax v2.5.0 and ran into a technical issue when launching the program with “High DPI scaling behavior” overridden to Application. I’m wondering if there is a way to troubl… --- ## [PrePoMax Broken Page](https://prepomax.discourse.group/t/prepomax-broken-page/3627)
**Author:** [@MisiaKu](https://prepomax.discourse.group/u/MisiaKu)\ **Replies:** 1\ **Last updated:** [August 29, 2026, 7:25am UTC](https://prepomax.discourse.group/t/prepomax-broken-page/3627 "2026-08-29T07:25:10Z")
--- ## [Solid Section goes missing when recreating boundary layer (since 2.5.2)](https://prepomax.discourse.group/t/solid-section-goes-missing-when-recreating-boundary-layer-since-2-5-2/3566)
**Author:** [@Fran](https://prepomax.discourse.group/u/Fran)\ **Replies:** 4\ **Last updated:** [August 24, 2026, 4:11pm UTC](https://prepomax.discourse.group/t/solid-section-goes-missing-when-recreating-boundary-layer-since-2-5-2/3566 "2026-08-24T16:11:22Z")
Hello I’ve recently started using the 2.5.2 version and noticed a problem I wasn’t encountering on 2.5.1. I have a model containing bolts, modelled as a split shaft, both parts as a compound part and then adding a boun… --- ## [Point and line smoothing](https://prepomax.discourse.group/t/point-and-line-smoothing/3597)
**Author:** [@Gunnar](https://prepomax.discourse.group/u/Gunnar)\ **Replies:** 4\ **Last updated:** [August 15, 2026, 9:44am UTC](https://prepomax.discourse.group/t/point-and-line-smoothing/3597 "2026-08-15T09:44:41Z")
First of all, I would like to thank Matej for the many great new features introduced with this version! Unfortunately, I experienced crashes in at least two situations right from the start: switching to the results ta… --- ## [Settings - Background](https://prepomax.discourse.group/t/settings-background/3610)
**Author:** [@arnie](https://prepomax.discourse.group/u/arnie)\ **Replies:** 1\ **Last updated:** [August 14, 2026, 3:14pm UTC](https://prepomax.discourse.group/t/settings-background/3610 "2026-08-14T15:14:54Z")
Is there a bug in 2.6.0 RC2 with setting the Backround - Graphics colour ? None of the options “White/Solid/Gradient” seem to work for me, --- ## [Wrong revolve axis is used when revolve section is selected in exploded view](https://prepomax.discourse.group/t/wrong-revolve-axis-is-used-when-revolve-section-is-selected-in-exploded-view/3579)
**Author:** [@Fran](https://prepomax.discourse.group/u/Fran)\ **Replies:** 10\ **Last updated:** [August 7, 2026, 2:44pm UTC](https://prepomax.discourse.group/t/wrong-revolve-axis-is-used-when-revolve-section-is-selected-in-exploded-view/3579 "2026-08-07T14:44:40Z")
Hello I noticed that when setting up a revolve mesh in exploded view, the axis of revolution will be wrong. This only happens if when exploded, the part is moved radially with regard to its axis (the top part meshed… --- ## [Contact pairs taking several hours](https://prepomax.discourse.group/t/contact-pairs-taking-several-hours/3523)
**Author:** [@CosmoKramer](https://prepomax.discourse.group/u/CosmoKramer)\ **Replies:** 5\ **Last updated:** [August 7, 2026, 1:55pm UTC](https://prepomax.discourse.group/t/contact-pairs-taking-several-hours/3523 "2026-08-07T13:55:53Z")
Is there any way to speed up assigning the contact pairs? When I do Search Contact Pairs, swap a few masters/slaves, and hit OK, the process takes several hours. Granted it is a large model (53 MB .pmx file). I’m using a… --- ## [Problem with extruding a mesh element](https://prepomax.discourse.group/t/problem-with-extruding-a-mesh-element/3570)
**Author:** [@MisiaKu](https://prepomax.discourse.group/u/MisiaKu)\ **Replies:** 13\ **Last updated:** [July 27, 2026, 8:08pm UTC](https://prepomax.discourse.group/t/problem-with-extruding-a-mesh-element/3570 "2026-07-27T20:08:12Z")
I wanted to experiment with other ways to build the mesh. I noticed that offsets \<0 can cause unexpected problems with thick plates and small curvatures Solo rondelle1.pmx (6.5 MB) --- ## [Camera rotation point gets reset when switching tabs](https://prepomax.discourse.group/t/camera-rotation-point-gets-reset-when-switching-tabs/3443)
**Author:** [@Fran](https://prepomax.discourse.group/u/Fran)\ **Replies:** 8\ **Last updated:** [July 13, 2026, 10:36am UTC](https://prepomax.discourse.group/t/camera-rotation-point-gets-reset-when-switching-tabs/3443 "2026-07-13T10:36:23Z")
Hi, Not sure if this is a bug or a feature, but when a custom camera rotation point is set (by clicking the the middle mouse button on the desired place), it gets reset to its default position when switching between tab… --- ## [Save on closing doesn't seem to be effective](https://prepomax.discourse.group/t/save-on-closing-doesnt-seem-to-be-effective/3499)
**Author:** [@Fran](https://prepomax.discourse.group/u/Fran)\ **Replies:** 5\ **Last updated:** [July 13, 2026, 10:23am UTC](https://prepomax.discourse.group/t/save-on-closing-doesnt-seem-to-be-effective/3499 "2026-07-13T10:23:56Z")
Hello I noticed something weird happening several times recently. When closing a file, I get a window asking if the file should be saved. If I click yes, the console at the bottom of the screen indicates a save operatio… --- ## [How should I resolve compilation errors?](https://prepomax.discourse.group/t/how-should-i-resolve-compilation-errors/3349)
**Author:** [@shl](https://prepomax.discourse.group/u/shl)\ **Replies:** 19\ **Last updated:** [July 10, 2026, 7:45am UTC](https://prepomax.discourse.group/t/how-should-i-resolve-compilation-errors/3349 "2026-07-10T07:45:10Z")
When I use the compiled version and try to use the revolve mesh feature, it gives an error, but my folder contains the gmshcommon file. How should I resolve this? --- ## [CREATE EQUATION available functions and syntax](https://prepomax.discourse.group/t/create-equation-available-functions-and-syntax/3302)
**Author:** [@ANYS](https://prepomax.discourse.group/u/ANYS)\ **Replies:** 9\ **Last updated:** [July 7, 2026, 9:09am UTC](https://prepomax.discourse.group/t/create-equation-available-functions-and-syntax/3302 "2026-07-07T09:09:00Z")
Hi, Natural Logarith Ln() is suggested as a dropdown menu but it doesn’t work. Regards NOTE: This is a self reminder for me on where to find the available functions and syntax. Ncalc - Functions | ncalc Tutorial --- ## [Why does the holes closes in "FE MESH"?](https://prepomax.discourse.group/t/why-does-the-holes-closes-in-fe-mesh/3369)
**Author:** [@LePinho](https://prepomax.discourse.group/u/LePinho)\ **Replies:** 6\ **Last updated:** [July 7, 2026, 9:08am UTC](https://prepomax.discourse.group/t/why-does-the-holes-closes-in-fe-mesh/3369 "2026-07-07T09:08:38Z")
Hello, I want to know why in the “FE MESH” area, two holes in my geometry is closed. My geometry functions like reinforced concrete, but the rebarb should create a checkerboard pattern. I don’t understand because it wor… --- ## [An Item With The Same Key Has Been Added Problem](https://prepomax.discourse.group/t/an-item-with-the-same-key-has-been-added-problem/3539)
**Author:** [@tuunch](https://prepomax.discourse.group/u/tuunch)\ **Replies:** 15\ **Last updated:** [July 7, 2026, 9:08am UTC](https://prepomax.discourse.group/t/an-item-with-the-same-key-has-been-added-problem/3539 "2026-07-07T09:08:29Z")
Hello, I’ve been trying to do a strength analysis. It went well even though I had pretty dense mesh, a lot of rigid bodies etc. . But after I added distributed mass and gravity load even though it converges and solves th… --- ## [Cannot delete deactivated mesh](https://prepomax.discourse.group/t/cannot-delete-deactivated-mesh/3398)
**Author:** [@imgprojts](https://prepomax.discourse.group/u/imgprojts)\ **Replies:** 5\ **Last updated:** [June 5, 2026, 3:19pm UTC](https://prepomax.discourse.group/t/cannot-delete-deactivated-mesh/3398 "2026-06-05T15:19:37Z")
I set a mesh to deactivated, but then decided to delete it. I then realized I could not delete it or activate it again to delete it. It says the key is no longer available. [Next page](https://prepomax.discourse.group/c/bug-reports/8.md?page=1)