MT4 keeps freezing

Hi
MT4 keeps freezing when i right click on a chart and select "object list" or "indicator list". I then have to close MT4 through ctrl-alt-del, and restart it, but i then can't go near these 2 features.
Does this happen to anyone else?
Why does it happen, and is there a way to solve this problem?

Thanks a lot.

Only ever had a problem like this if I have tried to use a new indicator that the software doesn't like, if you have recently added a new indicator, template or ea you may have to delete it from explorer, then restsrt MT4.