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I am on Mac OS X 10.7.5. and I am trying to run an executable called G.R.O.exe. I downloaded the mono framework to do this but it when I try to execute the file I get this error:

Cannot open assembly 'G.R.O.exe': File does not contain a valid CIL image.

Please help i am rather newbish at these things so please put everything in stupid terms... or at least teach me a bit.

share|improve this question
Are you sure it's a .NET exe? What application is that? – Daniel Beck Jul 26 '13 at 5:14
I think so. Its also a game download from the internet – BawsGuy Jul 28 '13 at 2:25

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