Shameless has failed to run

[JigglyJohn]

I am on windows 7 and when I try running Shameless it doesn't boot up. Here's the problem signature:
Problem Event Name: CLR20r3
Problem Signature 01: shameless.exe
Problem Signature 02: 1.8.8.0
Problem Signature 03: 591cdc4f
Problem Signature 04: mscorlib
Problem Signature 05: 4.0.0.0
Problem Signature 06: 4ba22001
Problem Signature 07: 11cd
Problem Signature 08: 9f
Problem Signature 09: System.TypeLoadException
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 1033
Additional Information 1: b957
Additional Information 2: b957cfefd38b0c1570b7c92ba02e6602
Additional Information 3: 3c1e
Additional Information 4: 3c1e572c796090092788b5fa0c7529fd