Don't know if this helps, but a bit of googling shows that this is often associated with trying to run a 32 bit binary on a 64 bit system.
See for example here: http://askubuntu.com/questions/133389/no-such-file-or-directory-but-the-file-exists
Check to see if ia32-libs are installed.
I run assist on Ubuntu 64 bit and did not have this problem when installing. I just now verified that I do have the ia32-libs installed.
Might be worth checking.
Cheers
great, this worked like a charm. thanks much! i've got Assist up and running now, unfortunately, a new problem has arisen. every time i try to deploy, the AA logo comes up for a few seconds, then disappears without launching me into the game.
on the sitrep it says GLXINFO NOT FOUND next to the openGL acceleration, but when i googled that it says it is installed by default on all desktop distros. is it possible that i don't have it? i don't really know how to search for it in my computer other than in the Dash home searchbar, which yields nothing fixed that by with typing glxinfo in terminal and being prompted to install, but AA is still quitting...
further research has revealed the problem may be my lack nvidia drivers. i'm downloading now, will update if this fixes. i'm really loving having to mess around with the terminal and having to install all these packages and stuff... i feel so... in control of my computer. you guys know a good place to start reading about how to screw around with linux and do cool nerd stuff?