Graphic card ATI Radeon HD2600 Pro
Intel Core 2 Duo
Broken: 2.71 of date 07-18-14 Hash # a04a803
Go to node window, add material, add mix shader in between diffuse and output,
add transparent to mix,
Open materials panel, crash.
See unlisted vid: http://youtu.be/1QGv5fccUrs
Blend precrash attached as well as crash report.