We need dxdiag and files from this folder for solve your problem. C:\Users\<Name>\AppData\Local\Arma 3 Alpha\

Can you upload somewhere in winrar package please?
When package will be smaller than 5,000k, so you can attach here. Thank you.

Zipped it with 7zip, but should be compatible with WinRAR, let me know if you need anything else from me.

Can you please attach game save with this crash?

I believe the save was overwritten, but upon running the Infantry Showcase again (restarting from beginning), suspending, and resuming, the save was not corrupted this time.

Must have been a fluke.

Had the same issue, forgot to get the reports. I had to revert the mission to fix this. Reverting did fix the issue, so it's obvious it had something to do with the save prosess.

My issue appaired in the air showcase.

same problem in the air showcase. Report uploaded

save games are in different folder than crashdumps
savegame is here: c:\Users\*\Documents\Arma 3 Alpha\Saved\A3\missions_f\showcases\

Can someone upload save game with this issue? Thank you.

It should be fixed.