To avoid these kind of errors and a lack of knowledge I decided not to host myself. The error is unlikely an OpenCats error because at my site is works as it should.
But before you post a problem please follow these simple rules as mentioned at the OpenCats site. It will help you to get the correct help.
what version of OpenCATS are you running?
what platform are you running it on (WAMP/LAMP)
does your OpenCATS run on a Dedicated server, VPS, or shared?
Have you checked your error logs for your webserver? Do they tell you anything useful? Post them!
can you reproduce your error?
have you searched the site to see if it's already reported?
Have you checked the Bug tracker to see if it's in there (oops still to implement that one
)