Since upgrading my forum to 4.2.1 I have a problem with "Mark Forums Read" The error message I'm getting is..
"Your submission could not be processed because a security token was invalid. If this occurred unexpectedly, please inform the administrator and describe the action you performed before you received this error."
Would someone be kind enough to advise me please?
Thank you
"Your submission could not be processed because a security token was invalid. If this occurred unexpectedly, please inform the administrator and describe the action you performed before you received this error."
Would someone be kind enough to advise me please?
Thank you

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