Ok thanks, adding System.Core in projectB fixed it. It worked without it with VS2010 though.
Btw I was using a project reference not an assembly reference. -- View this message in context: http://mono.1490590.n4.nabble.com/Extension-method-not-found-tp2402574p2403419.html Sent from the Mono - General mailing list archive at Nabble.com. _______________________________________________ Mono-list maillist - Mono-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-list
