Asemblies Crash Creo
We use Creo 9.0.4.0. I have created a piano hinge from an imported STEP file. This involved cutting the fixed hinge and reassembling it so I can change the open angle of the two leaves of the hinge. The screenshot below shows the assembly list of the part.

After closing out Creo for the day 0n 2/22 and attempting to work on the file today, Creo crashes and I get this error message:

I found that I can open asm.1 and asm.2 outside of the working directory, but the .asm more recent of .1 and .2 cause Creo to crash.
Has anyone experienced this?
I developed a work-around by copying asm.2, renaming it. I can get the assembly to open.
Why would the latest files crash?
Any insight would be appreciated. Thank you.

