I have made plugin which uses wp_redirect after it has processed form. It works well on my own computer (WAMP) and on my other linux-based dev server, but on my production server redirect doesn't work and I get message saying "Warning: Cannot modify header information - headers already sent..." but I'm sure I have output nothing before redirect and It does work on my other 2 servers so...
Any tips how to find out what causes this? Any settings that might do it?
I use same thems/plugins combo on my WAMP and production server. I also tried to set my plugin to first one which handles content by adding priority 1 to add_filter command.
I tried using both headway theme and basic twentyten theme but error still happened so I think its not theme related. Error message doesn't help either because it only points to themes header functions.