--- Operating System, Graphics card ---

Windows 7, 64bit
AMD Radeon HD5770
AMD Phenom II X4 955BE
12GB RAM

--- Blender version with error, and version that worked ---

2.65a and latest development build fail, no working version known.

--- Short description of error ---

Blender crashes when trying to export a rigged mesh along with the armature. Exporting the armature or the mesh alone works, though. No meaningful feedback on system console on the error. Minimal example to reproduce the error attached to the report.

--- Steps for others to reproduce the error (preferably based on attached .blend file) ---

Select "CollarExp" object, export to Collada (default), "selection only" and "include armatures" checked.

or...

Select the object and the armature, export with "selection only".