1Password extension disabled when restarting Firefox

I was having similar issues in recent releases. Now with FF 20.0 (OS X MLion) and the 3.9.14 1Password extension, I no longer see a pile of warnings in Console and cmd+\ works fairly reliably, but only after I de-activate and re-activate the extension. The icon disappears the first time I start the browser, so it's as if the whole extensions has been disabled. Luckily this does not require a browser restart, so it's better than some of the past problems I have had. But it's still strange and annoying.

None of this seems to indicate a serious issue, but since I finally found some 1pw entries in my console log, I figured I'd paste them from this morning:

2013-04-22 8:43:16.203 AM 1PasswordAgent[202]: Starting 1PasswordAgent 3.8.20 #31499 built Jul 17 2012 08:27:02
2013-04-22 8:43:16.205 AM 1PasswordAgent[202]: Trying to load Localizable.strings [English] from the main bundle
2013-04-22 8:43:16.210 AM 1PasswordAgent[202]: Cannot find English version, using English localization for Localizable.strings
2013-04-22 8:43:16.645 AM 1PasswordAgent[202]: Attempting to register while an attempt is already running
2013-04-22 8:43:16.724 AM 1PasswordAgent[202]: reloadAllObjects
2013-04-22 8:43:17.101 AM 1PasswordAgent[202]: Database (AGHtmlDatabase:file://localhost/Users//Dropbox/1Password.agilekeychain/) load time [Cache]: 0.314+0.062 (1052 objects)
2013-04-22 8:43:17.848 AM 1PasswordAgent[202]: Got disconnected: Error Domain=NSPOSIXErrorDomain Code=61 "Connection refused" UserInfo=0x101d6a930 {NSLocalizedDescription=Connection refused, NSLocalizedFailureReason=Error in connect() function}
2013-04-22 8:43:17.850 AM 1PasswordAgent[202]: failed because Error Domain=NSPOSIXErrorDomain Code=61 "Connection refused" UserInfo=0x101d6a930 {NSLocalizedDescription=Connection refused, NSLocalizedFailureReason=Error in connect() function}
2013-04-22 8:43:18.179 AM 1PasswordAgent[202]: Got disconnected: Error Domain=NSPOSIXErrorDomain Code=61 "Connection refused" UserInfo=0x10032d8d0 {NSLocalizedDescription=Connection refused, NSLocalizedFailureReason=Error in connect() function}
2013-04-22 8:43:18.193 AM 1PasswordAgent[202]: failed because Error Domain=NSPOSIXErrorDomain Code=61 "Connection refused" UserInfo=0x10032d8d0 {NSLocalizedDescription=Connection refused, NSLocalizedFailureReason=Error in connect() function}
2013-04-22 8:43:43.179 AM 1PasswordAgent[202]: reloadAllObjects
2013-04-22 8:43:43.443 AM 1PasswordAgent[202]: Database (AGHtmlDatabase:file://localhost/Users//Dropbox/1Password.agilekeychain/) load time [NSOperationQueue]: 0.102+0.162 (1053 objects)
2013-04-22 9:15:50.607 AM 1PasswordAgent[202]: Failed to return databaseID, encryption key is not loaded