User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0 Build ID: 20151223140742 Steps to reproduce: I just started thunderbird. Actual results: When starting Thunderbird not the Inbox, but the home page of thunderbird is displayed. From this I can't go to the Inbox or any other folders. Similarly, one can not open any windows as "Settings". The Inbox can only be opened in a new tab. This error occured recently to me on two completely independent systems (private and work). Version: I guess the latest but I'm not sure because I can't open the "About Thunderbird"-window because of this bug. Expected results: Inbox etc. should open normally.
Addition: It is not possible to write a new email.
Deleting "Lightning" in safe mode solved the problem.
Bug 1211291? Anything special about your system? What add-ons do you have installed?
Hi Magnus, thanks for your reply. Home PC runs with Win 7, PC at work with Win 8.1. Both systems are completely different so I guess it does not depend on the hardware. Only add-on that was installed was "Lightning" - our Sys Admin at work told me that there were often problems with that add-on, so he deleted it. Now thunderbird runs fine, same for the PC at home. Kind regards Martin