dlumd32.dll crash in Visual Studio 2010 when debugging WPF programs

[UltraDef]

My WPF applications frequently crash while being debugged in Visual Studio 2010. Fault module always points to dlumd32.dll, a DisplayLink library.

Frequent crash dialog #1:

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Microsoft Visual C++ Runtime Library
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Runtime Error!

Program: C:\Program File...

R6025

- pure virtual function call


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OK
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Frequent crash dialog #2:

Problem signature:
Problem Event Name: APPCRASH
Application Name: <my_app_name>.vshost.exe
Application Version: 10.0.30319.1
Application Timestamp: 4ba2084b
Fault Module Name: dlumd32.dll
Fault Module Version: 8.6.1.35912
Fault Module Timestamp: 4ee813d4
Exception Code: c0000005
Exception Offset: 000247e4
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 1033

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Checking "Enable unmanaged code debugging" would sometimes give the following errors:





Sometimes it freezes up the whole computer including the mouse pointer. The screen would update "ever so slightly" every 3-5 minutes so it isn't a complete freeze... but it's ultimately unusable and needs a hard reboot.

EDIT: Tried the following; didn't help.
- No monitor connected to USB adapter.
- USB adapter not plugged in (drivers including dlumd32.dll still loaded).
- Disabled switchable graphics; use dedicated ATI graphics.
- Disabled switchable graphics; use onboard Intel graphics.