Comment 106 for bug 240242

Something you can do to get useful information for this bug:
1) Go to about:config (click through the warning), search for "javascript.options.showInConsole", set the pref to true.
2) When you hit this problem, go to Tools -> Error Console, click on "Errors", and then copy any errors that have a chrome:// URL underneath them, and paste them in a comment here.

A friend of mine is experiencing this problem, and here's an exception from his error console (typed by hand from a screenshot, so excuse any typos):

[Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIWebNavigation.sessionHistory]" nsresult: "0x80004005 (NS_ERROR_FAILURE)" location: "JS frame :: chrome://global/content/bindings/browser.xml :: :: line 644" data: no]
chrome://global/content/bindings/browser.xml Line 650

http://bonsai.mozilla.org/cvsblame.cgi?file=mozilla/toolkit/content/widgets/browser.xml&rev=1.118&mark=642-644#642

I don't know what would be failing there. Gavin: any clue?