Solution 1 : Switch to older version of Gmail, by clicking link available at the right top of the gmail window. Though it limits your Gmail experience, it solves the undefined problem.
Solution 2 : Access your gmail from browsers other than Firefox as this problem occurs only in Firefox.
Solution 3 : Disable "Gmail Label colors" in the Grease monkey Add-on. It solves the problem altogether.
Solution 4 : Disable "Better Gmail" Add-on
If you know any work around, please post them in the comments. Solution 3 works for me.

Go to tools and click on addons then disable addons. Worked for me!
ReplyDeleteYou need not disable all add-ons. Just disable "Gmail Color Labels" under the Options of Greasemonkey Addon. It would solve the problem.
ReplyDeleteSolution #3 worked for me. Thank you SO much!
ReplyDeleteI uninstalled "Better GMail" add-on on my FireFox 3 and it all works fine now...
ReplyDeleteI uninstalled "Better GMail" add-on on my Firefox 3 and it all works fine now...
ReplyDeleteEven uninstall Grease monkey Add-on didn't work for me. Uninstall better gmail then OK.
ReplyDeleteThank you very much, Friends for your valuable solutions and feedback.
ReplyDelete