Thnx a lot. I will try this svn-thingy then, downloaded the last version from civfanatics-c2c homepage, so that might do the trick. I reckon my saves will still work?
And - the save certainly is end of turn...
v22 is released later today. Don't worry about SVN if you don't want to for now - just grab v22 tomorrow and see if you still have the issue.
Edit - I just checked and I can confirm that v22 has no crash on end turn from your save game (it plays through to the next turn fine). Whether it will be a viable game position when upgraded to v22 I'm less sure of

I'm guessing any mature game save from an earlier release will have big problems, since you probably never built any of the anti-crime buildings because of their gold consumption and no huge benefits (before v22 that is). Handling it will require rushing all the crime fighting you can, but the crime rates are so high that they may just swamp people before they are able to do that.