I have x3 installed on a vista laptop, and whenever I am working on something, it seems to work fine, then all of a sudden I will click on an object, or lettering or scroll down the page, and the page will go blank. Sometimes I can see what was part or the 'view' before I scrolled or clicked, and sometimes the whole thing goes blank.
If I try to zoom out or in, it just stays blank. So I have to save it right where I am and then close the page and re-open it. And just repeat the process if it happens again. 
Can anyone help?