i played linux version of CC that i got from humble bundle and it crashes sometimes especially when the drop ship hit the land.

The first and most obvious idea is to run from command line.
Open terminal, navigate to Cortex Command dir (use 'cd directory') and launch it ('./CortexCommand').
Remember to use tab for autocompletion of dirs, it's more error-proof.

thanks.

i did that and when i tried to start a campaign:


i'm playing CC on Debian Squeeze 64-bit