User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:16.0) Gecko/20100101 Firefox/16.0 Build ID: 20121024073032 Steps to reproduce: Create <label value="test" href="http://example.com"/> click on "test" link Actual results: First click produces error in console: Tue Nov 13 2012 22:43:39 Error: NS_ERROR_FAILURE: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIDOMJSWindow.open] Source file: chrome://global/content/bindings/text.xml Line: 361 Second click will crash (exit) Thunderbird Expected results: It should open the provided web page in a new tab or a default browser Firefox has no such problem, it loads the site in a new tab.

This is only true in extensions ? Does the crash reporter shoes up when you crash ?

No crash report shows

Can you capture the stack when it crashes ?

I don't know how to do it

We have documentation at https://developer.mozilla.org/en/How_to_get_a_stacktrace_with_WinDbg you'll need to replace firefox by thunderbird.

In firefox trunk it does not crash, but opens to http://www.mozilla.org/en-US/firefox/fx/

With TB daily it does crash. windbg output doesn't look good Use !analyze -v to get detailed debugging information. Event is not an exception Failure could not be analyzed

does it reproduce in version 17 or newer? stack I provided in comment 7 seems worthless

It's reproducible in latest 21.0a1 nightly build

I can't reproduce this in Thunderbird 17.0.6, Thunderbird 22.0 beta, Earlybird 23.0a2 or Daily 24.0a1 on Windows 7 32-bit or Windows XP. Can you still reproduce this and did you use windbg?

It crashes TB 17.0.6 on first click, no debug prompt, nothing, TB just gone. Latest nightly 24.0a1 has no problem though, as well as 22.0a1

V@no thanks for the update and testing version 24. WFM based on comment 11. BTW my windbg from comment 7 contained the same [JavaScript Error: "NS_ERROR_FAILURE: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIDOMJSWindow.open]" {file: "chrome://global/content/bindings/text.xml" line: 361}]