Could not construct instance of ShamWOW! Exception was thrown. Exceptionrocess must have frozen or gotten out of sync; InjectionFinishedEvent was never fired.
But if ShamWow throws exceptions and that causes it to crash you should try another shaman CC. Shamwow being the default one tho, that should work. Verify that you'r running latest .NET runtime.
as said in shaman wow thread delete all shamanwow files from the CustomClasses folder that should be:
ShamWOW folder
config folder
and any shaman cs present if exists.