You can clone with
uncaught exception: "redeclaration of const document" in components/greasemonkey.js, line 302
Steps to reproduce:
1. Open a page and let Greasemonkey inject some scripts
2. Open a sidebar (for example your history or bookmarks)
3. Close that sidebar again
Build identifier:Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:126.96.36.199) Gecko/20101027 Firefox/3.6.12
Couldn't reproduce this with FF4 nightly.
If the document variable is const then we can't overwrite it with a local variable. Since this only effects pre-Firefox 4 and that code is for Firefox 4, we could just use the local variable trick in Firefox 4 and leave older version of Firefox the way they are.
I have seen this, I think on Linux, but am currently not seeing it at HEAD, on Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:188.8.131.52) Gecko/20101026 Firefox/3.6.12
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:184.108.40.206) Gecko/20101026 Firefox/3.6.12
Yep bug confirmed on Mozilla/5.0 (X11; U; Linux i686; en-US; rv:220.127.116.11) Gecko/20100625 Firefox/3.6.6 w/ GM nightly 2010-11-21, still not on Windows. Therefore de-prioritizing to 0.9.1.
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:18.104.22.168) Gecko/20100625 Firefox/3.6.6
I'm seeing a different error now:
Error: uncaught exception: [Exception... "Illegal value" nsresult: "0x80070057 (NS_ERROR_ILLEGAL_VALUE)" location: "JS frame :: file:///.../extensions/%7Be4a8a97b-f2ed-450b-b12d-ee082ba24781%7D/components/greasemonkey.js :: anonymous :: line 306" data: no]
But it goes away with the fix for #1298 applied, so closing this issue.