Can't run Windows Live Messenger and Skype

Hey,
I've recently had problems with running skype and windows live messenger. I can start both programs but once I log in I get the following warning 'A problem cause the program to stop working correctly. Please close the program'. People see me come online on msn but I immediatly get this warning. After this worning I used to have an error aswell but now I've disabled WER. Sometimes I do get on skype but never on msn. I've tried to search for solutions for this problem but it never works so this is my last chance or I'll have to reinstall windows vista home basic x64 or buy windows xp. So some help would be nice .