Many of my users are experiencing this when trying to save games. Seems most are IPB games. I am only using forum classic, not suite (CMS) at 4.1.11 so not sure the index.php edit should be an issue.
you do not have permission to access this page. This could be due to one of several reasons:
1.Your user account may not have sufficient privileges to access this page. Are you trying to edit someone else's post, access administrative features or some other privileged system?
2.If you are trying to post, the administrator may have disabled your account, or it may be awaiting activation.
User group perms seem fine.
Not sure what to check for now, as admin cant duplicate, with a test account as regged, could only duplicate when adding a comment, but perms are set to true.
Timeout is set for 15 minutes, had it set to 30, no difference.