I installed OpenPublish locally to localhost/openpublish and then moved it to the root of my shared hosting account. Now I've noticed an occasional error when logged in or viewing the site, now and then I get the error message:

"Page not found
The requested page could not be found. "

It seems to happen more when accessing the database such as when uploading content etc, I find that the content is uploaded but instead of going to the confirmation page my site gives a 'page not found' message instead, hitting refresh sorts the problem out but this is very annoying and I cant expect my users to do this all the time.

I have tried setting the baseurl in settings.php and uncommenting my .htaccess file line RewriteBase / but no luck I still get an occasional error message which seems to happen at random.
I'm convinced that it has something to do with my database and when I migrated it from my computer (localhost/openpublish) to my shared hosting.

Does anyone know of a way to fix this? Thanks in advance...