I’ve just upgraded to 2.7 and now I get an error whenever I try to POST data to plug-ins I’ve written or other third-party plug-ins. For example I use MEFU, it used to work fine but now I get an error saying “The action you have requested is invalid.” I thought it might have something to do with mod_rewrite, but turning that off doesn’t help. Looking at chrome developer tools, it shows an an error “301 moved permanently”. I can use the GET method with no problems.
Thankful for any help I can get!