when I make those changes I get a 500 internal server error.
Probably worthwhile storing the session files outside the webroot.
Just an update to my post above: I deactivated JavaScript, called the manager configuration via index.php?a=17, then could after activating JS again remove blocks.
A huge THANK YOU to the posters on this thread. I was tearing my hair for several hours before I found this. Problem solved.
illegitimati non carborundum
I was having the same issue (very random success when trying to log into Manager) when I copied a site from a GoDaddy server to a Rackspace server. I didnt get the usual Manager errors, so I ruled out needing to re-Install MODx, but after a few hours of trying everything i decided to re-Install MODx (v1.0) over my existing installation (v1.0) and that did the trick. I no longer have issues logging into the Manager.
Hope this helps.
I came across this thread after encountering some login issues with rackspace cloud sites. My problems is that I cannot login to the manager from IE7 or IE8 (have not tested IE6 yet) and just keep getting thrown back to the login form everytime. But on FireFox I can login just fine (although when saving documents I am greeted with a blank content area). I have tried implementing the suggestions here of altering the location of session storage to no avail (either in .htaccess or php.ini). This is the first site I have setup using ModX 1.0.x on rackspace cloud (have plenty with older versions) and was surprising given that this was not the first site setup with this ModX version, just the first one at rackspace. Anyone have any other suggestions?