[crash] event_bindings:385: [...] Cannot read property 'stack' of undefined

Running Sidewise 2013.9.15.0 on Kubuntu saucy (linux), chromium 33.0.1736.3 from ppas.

Sidewise crashes very very often with the following terminal output:

[2113:2113:1226/142316:FATAL:console.cc(62)] Check failed: false. (BLESSED_EXTENSION context for biiammgklaefagjclmnlialkmaemifgo) extensions::event_bindings:385: Uncaught TypeError: Cannot read property 'stack' of undefined{TypeError: Cannot read property 'stack' of undefined
at Event.dispatch_ (extensions::event_bindings:385:19)
at dispatchArgs (extensions::event_bindings:246:26)
at dispatchEvent (extensions::event_bindings:255:7)}

It works for a while after clearing all settings, but now that I've gathered a few hundred hibernated tabs again it breaks. Oftentimes it will stick around for a few seconds after being restarted before crashing with the same message.