What OS are you running on your computer? The windows version should work on all versions of windows XP and up.
Hmm, I'm not sure what's wrong then. If you open a command prompt (shift+right click in the Aground folder, then click open command window here) and type "Aground.exe" and hit enter, does it show any errors before crashing (like ModHandler.hx:95: Enable Mod: Core)? Does it show any more info about the error before you click troubleshoot?