User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.6) Gecko/20060728 Firefox/1.5.0.6 Build Identifier: Mozilla Thunderbird version 1.5.0.5 (20060815) When the profiles.ini contains an absolute path with a non-existing drive letter, Thunderbird issues a completely wrong error message. Reproducible: Always Steps to Reproduce: 1. Set an absolute path in profiles.ini that contains a drive letter 2. Disconnect the drive 3. Start Thunderbird 4. Misleading error message is issued. Thunderbird exits. 5. Reconnect the drive 6. Restart Thunderbird 7. Functions normally Actual Results: Misleading error message "Thunderbird is already running, but is not responding. To open a new window, you must first close the existing Thunderbird process, or restart your system." Expected Results: An appropriate error message, e.g. "Path [wrong path] to mail profile folder is not accessible. Please correct your profiles.ini, or reattach any disconnected network drive." My profiles.ini: --------------------- [General] StartWithLastProfile=1 [Profile0] Name=default IsRelative=1 Path=Profiles/anrsh13h.default [Profile1] Name=tsund IsRelative=0 Path=t:\Mail\Thunderbird\profil.tsund Default=1 --------------------

confirming - though I think this is a profile manager bug, not a TB bug per se.

*** This bug has been marked as a duplicate of 278860 ***