HLMV Problem

[Thanakrits15]

I've suddenly been having a problem with the Half-Life Model Viewer for source engine. It occurred after I compiled a model using GUI StudioMdl. It happens to all of the games I have installed. Here is the crash log from windows:
Problem signature:
Problem Event Name: APPCRASH
Application Name: hlmv.exe
Application Version: 0.0.0.0
Application Timestamp: 5091d3f0
Fault Module Name: shaderapidx9.dll
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 5092db27
Exception Code: c0000005
Exception Offset: 0000cb83
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 1033
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789

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And here are the pics:
[IMG]https://dl.dropboxusercontent.com/u/87769154/problem02.png[/IMG]
[IMG]https://dl.dropboxusercontent.com/u/87769154/problem03.png[/IMG]

I should also mention that I have a 1024x768 resolution, which some forums claim to be a part of the problem, but the model viewer was working fine under this resolution until I compiled a model yesterday.

Any help would be appreciated!

[Katra804]

Verify the integrity of the tool cache for the Source SDK. That should get it working again.