i ). prob doing something silly but for the last monthor so everytime i try and log on i get this.(invalid Redirect URL (https://perb.cc/vbulletin/index.php). the second time it always works! what is wrong sorry computer challenged.
It has been my expereince that as long as you have the PERB cookie on your machine, you do not get the redirect message. If you use private browsing, clear your cache at shutdown, delete browsing history, do not accept cookies and so on, you will get this message.