I run vBulletin 3.6.5 with vBSEO 3.0 and every once in a while when a page is loaded a white page with the text "Page not found" appears. This started happening after vBSEO was installed so I suspect it is somewhat involved. When this error occurs it can be solved by simply reloading the page. It is completely random when it happens. I read about someone else getting this error when just activating vBSEO and he added something to his htaccess which solved the problem. Since vBSEO is working I just tried editing the htaccess hoping it would help, but it did not.

This is really annoying and is certainly not helping the stats of my board. Anyone that has had the same problem and now about a solution?