RC3 Error -> Unable to logout

[ComputerLady]

SMF Version: SMF 1.1 RC3
When I click on the Logout menu choice in SMF 1.1 RC3, I am now getting the following:

An Error Has Occurred!
Unable to verify referring url. Please go back and try again.

I have restored the default theme included in SMF 1.1 RC3 to see if this would correct the problem, it has not.

After coming here I attempted to do the same, which worked correctly. Possibly caused by one of the mods in place? Those being:

1.     Attachments Mod      1.0       [ Uninstall ]  [ List Files ]  [ Delete ]
2.    VisualWarning    1.29    [ Uninstall ] [ List Files ] [ Delete ]
3.    Ad Managment    2.0    [ Uninstall ] [ List Files ] [ Delete ]
4.    Report PM to Administrator    0.2    [ Uninstall ] [ List Files ] [ Delete ]
5.    SMF 1.0.7 / 1.1 RC2 Update    1.0    [ List Files ] [ Delete ]
6.    Users Online Today Mod    1.4.0b3    [ Uninstall ] [ List Files ] [ Delete ]
7.    SMF 1.1 RC2 Security Patch - 2    1.1 RC2  [ List Files ]  [ Delete ]

Should I try removing those mods (SMF updates) that are probably included within SMF 1.1 RC3? (The ones that do not show the [ Uninstall ] option, or have green circles next to them.) Can also try removing some of the other mods in an attempt to see which one is causing error...

[ComputerLady]

SMF Version: SMF 1.1 RC3
1.     Attachments Mod      1.0       [ Uninstall ]  [ List Files ]  [ Delete ]

Guess I'm lucky! After removing the above mod, normal logout is now happening. So, must be a bug in that mod. Where should this thread be moved to now?

[J. Williams]

May I ask why you even have an attachments mod when the original system of attachments is already on SMF?