Additionally, if I try to change some of the other user details on the profile page, the backend generates the following:
E_USER_ERROR: setPrefixedCookie: Can't set cookie(loginsession, 9lTOzkTO4EzN0EjOiM3clN2YBR3chxmIsISM5cjM5Y2NjRDOyYjZ3ImYxI2M0MzMkVmY4YWNiJzN4QGNmJDZkFWOkETYoNHJiojIoNXYIRmcvd3czFGciwiIt92YuEWakVWblx2bwh2YyVGcA9mZulmI6ISZtFmbyV2c1Jye), headers already sent! Output started in /homepages/34/path line 527.
Again, the data is being saved, but the profile page refuses to reload.
Functions that send or modify the headers, ie: setcookie() which is called by setPrefixedCookie(), should be executed first before displaying any output.
So I'd check if the setPrefixedCookie() code is called before anything that displays an output.
PS: Check out this StackOverflow thread that discusses the same error for more details: http://stackoverflow.com/a/8028987
Hope this helps!
PHP Programmer - interactivetools.com