SEP Service Won't Remain Started

Symantec service will not remain started on W2K8 core box. Here's the error in the application event log:

Faulting application name: ccSvcHst.exe, version: 12.12.0.15, time stamp: 0x550cbac0
Faulting module name: SfMan.plg, version: 12.1.6318.6100, time stamp: 0x55ba07d8
Exception code: 0xc0000005
Fault offset: 0x0001148e
Faulting process id: 0x1230
Faulting application start time: 0x01d2974e4bc63bf6
Faulting application path: D:\Program Files\Symantec\12.1.6318.6100.105\Bin\ccSvcHst.exe
Faulting module path: D:\Program Files\Symantec\12.1.6318.6100.105\Bin\SfMan.plg
Report Id: 89a72516-0341-11e7-ac19-005056a8272d

Any ideas? Thanks.