Inventor FEA Error Internal Error # ps_1

[kpeters98]

Good day, I've been running an FEA simulation and am having a new issue. I've ran this file a dozen or so times with no issue. I changed some material properties  and now I get an error "Internal Error # ps_1". I have deleted all the FEA files and started over, performed a save as and built the simulation up again, nothing works. 

Does anyone have some advice?

Thanks in advance. 

[Gabriel_Watson]

Try deleting temporary files in your PC, or identifying if any individual component removed will make the simulation succeed (as per solution below), in case any file is corrupted:
https://forums.autodesk.com/t5/inventor-forum/stress-analysis-internal-error-ps-1/td-p/8643005

[johnsonshiue]

Hi! Here is another thread regarding such internal error. The following thread was reported as INVGEN-17973. However, the latest status shows that the defect was closed as a Solver Limitation. It is because the particular case had excessive thin-wall components and the solution cannot be obtained unfortunately.

Another thing to try is to clean up files from %temp%.

https://forums.autodesk.com/t5/inventor-forum/internal-solver-error-inventor-simulation-problem/td-p...

Many thanks!

[kpeters98 · Accepted solution]

Hey, thanks for the suggestions. I did find the other threads prior to posting and had tried their solutions to no avail. It turned out to be a corrupted material file that I had made. Something triggered when I edited it. I had to go into every file that used that material and delete it, then FEA started working again. 

I appreciate the recommendations, but i think I've got it wrapped up now.