Outlook 2007 crashes when replying to an e-mail

Hello,

I have a couple users who are saying their clients are having trouble replying to their e-mail. The clients can open up the e-mails just fine, but when they hit send, it crashes their Outlook. From what I'm told, they are all Outlook 2007 users, however, I attempted to replicate the issue on a test computer with 2007 and it didn't crash when trying to reply or even send it. 

We use a image in our signatures, but I'm not sure what would be causing the crash even if that were the cases since this is the first time since August that we have experience this issue. Would an HTML signature conflict with a specific setting? 

Here is the Event Viewer log:

Error:

Faulting application name: OUTLOOK.EXE, version: 12.0.6661.5003, time stamp: 0x4fa2a9e1
Faulting module name: mso.dll, version: 12.0.6662.5000, time stamp: 0x4fd67dd1
Exception code: 0xc0000005
Fault offset: 0x0026e3ea
Faulting process id: 0x1630
Faulting application start time: 0x01cdb133c510e027
Faulting application path: C:\Program Files (x86)\Microsoft Office\Office12\OUTLOOK.EXE
Faulting module path: C:\Program Files (x86)\Common Files\Microsoft Shared\office12\mso.dll
Report Id: 41eef071-1d27-11e2-b1ba-3cd92b4c9b3f

Information:

Fault bucket 3111825670, type 1
Event Name: APPCRASH
Response: Not available
Cab Id: 0

Problem signature:
P1: OUTLOOK.EXE
P2: 12.0.6661.5003
P3: 4fa2a9e1
P4: mso.dll
P5: 12.0.6662.5000
P6: 4fd67dd1
P7: c0000005
P8: 0026e3ea
P9: 
P10: 

Attached files:
C:\Users\glindstrom\AppData\Local\Temp\7707260.cvr
C:\Users\glindstrom\AppData\Local\Temp\7707432.od
C:\Users\glindstrom\AppData\Local\Temp\LoadedBodyStream-7707244-0.out
C:\Users\glindstrom\AppData\Local\Temp\4853659.od
C:\Users\glindstrom\AppData\Local\Temp\CVRF8B.tmp.cvr
C:\Users\glindstrom\AppData\Local\Temp\WER9C02.tmp.WERInternalMetadata.xml

These files may be available here:
C:\Users\glindstrom\AppData\Local\Microsoft\Windows\WER\ReportArchive\AppCrash_OUTLOOK.EXE_ff841b73201e5ac0691f217dd16549ec729c1f2_13d5bf4b

Analysis symbol: 
Rechecking for solution: 0
Report Id: fd492919-1d26-11e2-b1ba-3cd92b4c9b3f
Report Status: 0