After a Wheezy upgrade to iceweasel 38.2.1esr-1~deb7ui, iceweasel does not display when started. An iceweasel process starts, but X server does not pick it up.
The terminal gives me: console.error: [CustomizableUI] Custom widget with id loop-button does not return a valid node and many lines like: 2015-09-10 16:13:04: basic_code_modules.cc:88: INFO: No module at 0x0 2015-09-10 16:13:04: basic_code_modules.cc:88: INFO: No module at 0xbf9ba83c I find that "Bug 1097597 - Disabling loop breaks the world" reported last year for version 35 & 36 was supposedly fixed. But I also see Bug 798238 that version 38.2 crashes when certain pages (YouTube) are loaded. After the update Iceweadel worked a couple of days until I visited YouTube, but this may only be a coincidence. I now can't get Iceweasel to be seen by the X server at all. I don't see any choice of versions in the debian repository and so can't revert to an earlier version. Advice needed.