windows 7 64 bit
Broken: 2.77a , blender-2.77-566dd4e-win64.zip
Short description of error
Crash when adjusting slider in Graph editor at active keyframe on Frame slider
Exact steps for others to reproduce the error
in Graph editor when clicking and holding on Frame and value sliders to adjust by dragging mouse then blender crashed, tryed many times and working every time.