I have the same problem with MT4. I posted a question on the forum also regarding how to fix it. Hopefully someone will be able to help us.
Here's the link to my post if you want to check for replies. Wow! I just realized you posted your question on September 7th!! Sucks that no one has responded to your query. Did you ever figure out how to solve the problem? I'm beginning to think I'll have to re-install MT4 on my computer.