Anyone else having trouble finishing an AI PTE game?

I have tried a few game and I loose contact with the servers each time.

Is it multiplayer only at the moment?

Only one I've tried on this build so far ended in server crash.

After trying 3 times with the AI at various levels and all of them crashing I was able to "play" for at least twice as long as any other game when setting the AI level to sandbox. It appears that after the AI encounters enemy actions it crashes (perhaps trying to use the "D-gun").
Would not normally be a problem but my Normal gaming buddy has been out lately and I have not seen any open games when I have looked around.

OK and now I tried twice with a human, and it crashes the same way. Pitty I really like the way the games were playing out. Oh well. I'll try again next update.

*3 hours later* new update same as last with bug fixes try now plz ty.

Thanks, I should be able to try tonight.