FAS File Frustration in ACAD 2023

[CEHill]

Two previously-functioning AutoCAD add-ins - one purchased - avialable in the Autodesk Store are exhibitting .FAS file loading errors in 2023.
The developers have made suggestions with one providing the actual LSP file flavor to test.

What have been your experiences been with, including correcting, FAS file errors?

Extreme Clean on Two Machines
While I am not sure that I have totally exhausted potential causes, much time has been spent in reinstalling AutoCAD on two computers that exhibit this same error.
This is after carefully uninstalling ALL Autodesk-based application along with AutoCAD-specific support folders (per Autodesk official step by step guidelines)
Microsoft's Program Installation/Uninstallation Utility cleaned the machines as well.

Currently, I would rather NOT reveal each of the two high quality AutoCAD add-ins whose developers have provided top-notch and timely techincal support.

New Release Woes
My ire is directed at the source platform at this point.
Every 3-4 releases, I get overcome by the thoughts of new functionality and sucumb to installing the latest version.
Each time I understand why I shouldn't have.

[Opie]

Does the actual LSP file cause the same issues as the FAS file? Has a new FAS file of that LSP file been built with the current CAD version continue to cause issues? I have VLX files still functioning that were built in 2007.

[CEHill]

Does the actual LSP file cause the same issues as the FAS file? Has a new FAS file of that LSP file been built with the current CAD version continue to cause issues? I have VLX files still functioning that were built in 2007.

It appears to in my first test. Tomorrow, I must get back to troubleshooting (as initial sessions have me a tad behind schedule today) and will carefully retry the suggested workaround that includes this LSP file. Thanks again!

[Opie]

If the AutoLISP file causes the same issues as the FAS, then the methods used in the AutoLISP file have issues with the current version. If the software is still under a support agreement, then contact the provider and have them troubleshoot or provide a corrected file.

You should not need to reinstall your CAD to make an AutoLISP file to work.

[Ed Jobe]

I agree with Opie. It's highly unlikely that the problem is with AutoCAD's inability to interpret a FAS file. If so, you would have many more lisp problems, not just with one company's fas file. At least you got some good experience on how to do a clean install.

[CEHill]

If the AutoLISP file causes the same issues as the FAS, then the methods used in the AutoLISP file have issues with the current version. If the software is still under a support agreement, then contact the provider and have them troubleshoot or provide a corrected file.

You should not need to reinstall your CAD to make an AutoLISP file to work.

Agree x 1000! The developer is working with me.

- - - Updated - - -

This makes sense. What is strange is the fact that in one application and, in spite of its single FAS file load error at startup, this particular application appears to be working well. At this point, I haven't tried all of the toolsets within the add-in, but, ...!

[Tharwat]

You may find the newly added system variable helpful.
https://help.autodesk.com/view/ACD/2...6-AD2C3DF203A3

[Ed Jobe]

You may find the newly added system variable helpful.
https://help.autodesk.com/view/ACD/2...6-AD2C3DF203A3

Are you sure you linked to the correct article? That one has to do with what lisp IDE you want to use and that hasn't been discussed in this thread. Perhaps you meant to reply to a different thread?

[Tharwat]

It does not only affect the IDE but also the .vlx as I have experienced that recently with quite number of my customers who uses latest CAD versions and it should help as well with .FLS I believe.

[Ed Jobe]

That information is helpful. What setting would you recommend. I guess he could just try all 3 of them!