There was some accidental breakage in the Mac builds of Nightly last Friday (Sept 16th), which results in a crash when you try to update your build. The revisions & buildIDs for the broken builds are

  • 39b192706927, 20110916030907
  • f4d78560721a, 20110916071142

You can check what you have by loading about:buildconfig, or evaluating navigator.buildID in the Web Console.

The solution is to download the latest Nightly build from

Applications like Thunderbird and SeaMonkey are probably also affected.

One Response to “Broken updater for Mac Nightly builds”

  1. Broken updater for Mac Nightly builds | Callek’s Blog Says:

    […] a queue from Nick Thomas (Post), and as he so deftly notes. This breakage is also for SeaMonkey. To quote him (while replacing […]