Here is a current list of known issues with some systems/OS's

Why the hell cant I download a version for Linux?:
Because Omega Script runs using mIRC as a shell and mIRC does not and will not ever come out with a linux version. HOWEVER you CAN still run it on Linux an here is how (Please note you need WINE (A Windows App Emulator for Linux).
(Also note, somtimes this can be buggy):

Logon as su (super user)
navigate to the location of where you installed Omega Script.

wine omegascript.exe