Windows 7: dlhost error comcast

Hey guys i just came across this error, can someone please help me:
Faulting Application Path: D:\Windows\System32\dllhost.exe

Problem signature
Problem Event Name: APPCRASH
Application Name: DllHost.exe
Application Version: 6.1.7000.0
Application Timestamp: 49431fe1
Fault Module Name: StackHash_dc55
Fault Module Version: 6.1.7000.0
Fault Module Timestamp: 49433e67
Exception Code: c0000374
Exception Offset: 000c0853
OS Version: 6.1.7000.2.0.0.256.1
Locale ID: 2057
Additional Information 1: dc55
Additional Information 2: b618d5a4cec788acaa11d8c1d97b5229
Additional Information 3: 1b12
Additional Information 4: b011936cb2244890599b515a8b684172

Extra information about the problem
Bucket ID: 1197193871

Basically it only happens when i do this:

Ive recorded some videos using Camtasia Studio 6 once i come close to those files even before i open them i get a window com surragate already causing problems, most of the times when i open these files, my windows crashes and has to restart.

Anyway to fix this?

Hello Pipson,

Welcome to the Seven Forums.

Since this problem just started, you could try a system restore to a point before this started happening. Info here if needed: System Restore

You could also try a system file check. Info if needed: SFC /SCANNOW Command - System File Checker

Please keep us posted.

Hope you enjoy your stay.
Gary