Crash on exit

[Kitanode]

Hi,
     I bought US last night on Steam and i love it.

Unfortunately when i exit it, right after i click 'don't send' on the comment box the game will exit then crash and i have to click 'close application' on the window that pops up.

I use Win 7 ultimate 64 bit
          ati 4770 gfx card
           steam version

Do you need any other info?

I don't see any similar topics in the help forum so i don't know if this is something that happens a lot or not.

It doesn't stop me from enjoying your software but it's rare for me to see this happen to a product on steam.