Crash on hitting del after dragging instrument name

Move an instrument name, but don't have it remain selected (as in select it, move it in any direction, and let go of it so that it does not remain highlighted in blue), then hit del...

Problem signature:
Problem Event Name: APPCRASH
Application Name: nightly.exe
Application Version: 0.0.0.0
Application Timestamp: 4affbc0a
Fault Module Name: StackHash_0a9e
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Code: c0000005
Exception Offset: 00000000
OS Version: 6.1.7100.2.0.0.256.1
Locale ID: 1048
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789

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