Error: redirect fail

I've updated my Joomla to 3.6 and also MP to latest version. After updating MP, restricted users are no longer redirected to the plans page. Now they only get the error: You are not authorised to view this resource.

I've tried everything, including activating the Redirect Plugin (I know that's not really the solution). Do you have any idea what might cause this error? How can I fix it?

I found out what caused the error... I used another extension "Excelcsv User Import 2.4.26" and that seems to have broken my Joomla ACL. I did a complete rollback to yesterday and now everything is fine.
Will try this ExcelCSV import again in the future, but then more cautiously.

If you decide to try it again, you should try on a dev site instead of on a live site

Regards,

Tuan