This is on Windows 8 x64 Professional, NIS 2014 V21.0.1.3, with IE 10.
SYMHTML.DLL randomly causes IE 10 to crash.
Faulting application name: IEXPLORE.EXE, version: 10.0.9200.16660, time stamp: 0x51f1c5f3
Faulting module name: SYMHTML.DLL_unloaded, version: 0.0.0.0, time stamp: 0x52018148
Exception code: 0xc0000005
Fault offset: 0x5c14ed67
Faulting process id: 0x1280
Faulting application start time: 0x01cea9fe75bcf5ef
Faulting application path: C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
Faulting module path: SYMHTML.DLL
Report Id: 8431973e-15f8-11e3-8135-0019d16d6468
Faulting package full name:
Faulting package-relative application ID:
This was reported multiple times during NIS 2014 beta testing but never repaired/fixed by the developers.