Installed win 8.1 preview smoothly last night. Now I'm having problems. Certain programs like File Manager (!), Photoshop crash upon opening. Chrome works, but if I right click on a link, the dialogue box opens then crashes the program. Here's the error report, wondering if its a video drive error:

Log Name: Application
Source: Application Error
Date: 6/29/2013 9:38:57 AM
Event ID: 1000
Task Category: (100)
Level: Error
Keywords: Classic
User: N/A
Faulting application name: Photoshop.exe, version:, time stamp: 0x5176451b
Faulting module name: dlnashext.dll, version: 12.0.9431.0, time stamp: 0x51bcfb3d
Exception code: 0xc0000005
Fault offset: 0x000000000000d56c
Faulting process id: 0x83c
Faulting application start time: 0x01ce7465df0825b6
Faulting application path: C:\Program Files\Adobe\Adobe Photoshop CC (64 Bit)\Photoshop.exe
Faulting module path: C:\Windows\System32\dlnashext.dll
Report Id: a9bbfe75-e05c-11e2-9b21-0026832cc03e
Faulting package full name:
Faulting package-relative application ID:
Event Xml:
<Event xmlns="">
<Provider Name="Application Error" />
<EventID Qualifiers="0">1000</EventID>
<TimeCreated SystemTime="2013-06-29T01:38:57.000000000Z" />
<Security />
<Data>C:\Program Files\Adobe\Adobe Photoshop CC (64 Bit)\Photoshop.exe</Data>

Anyone else having this problem?