cwnep.sys BSOD error

Hi Team,
Getting system service exception error. please find BSOD analysis as below
Primary Analysis

Crash Dump Analysis provided by OSR Open Systems Resources, Inc. (http://www.osr.com)
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Windows 7 Kernel Version 7601 (Service Pack 1) MP (4 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS
Built by: 7601.18229.amd64fre.win7sp1_gdr.130801-1533
Machine Name:
Kernel base = 0xfffff800`02c68000 PsLoadedModuleList = 0xfffff800`02eab6d0
Debug session time: Mon Apr 28 04:00:03.516 2014 (UTC - 4:00)
System Uptime: 1 days 20:20:05.272
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* Bugcheck Analysis *
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SYSTEM_SERVICE_EXCEPTION (3b)
An exception happened while executing a system service routine.
Arguments:
Arg1: 00000000c0000005, Exception code that caused the bugcheck
Arg2: fffff880048c4a86, Address of the instruction which caused the bugcheck
Arg3: fffff8800a10e390, Address of the context record for the exception that caused the bugcheck
Arg4: 0000000000000000, zero.

Debugging Details:
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TRIAGER: Could not open triage file : e:\dump_analysis\program\triage\modclass.ini, error 2

EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at "0x%08lx" referenced memory at "0x%08lx". The memory could not be "%s".

FAULTING_IP:
cwNep+aa86
fffff880`048c4a86 8b4104 mov eax,dword ptr [rcx+4]

CONTEXT: fffff8800a10e390 -- (.cxr 0xfffff8800a10e390)
rax=fffff8a003f34c72 rbx=fffff8a00190d1f0 rcx=0000000000000000
rdx=0000000000000030 rsi=0000000000000000 rdi=0000000000000000
rip=fffff880048c4a86 rsp=fffff8800a10ed70 rbp=fffffa800718d060
r8=0000000000080004 r9=0000000000000000 r10=0000000000000000
r11=fffff8800a10ee10 r12=0000000045579864 r13=fffff8a011d15000
r14=0000000000000001 r15=0000000000000030
iopl=0 nv up ei ng nz na pe nc
cs=0010 ss=0018 ds=002b es=002b fs=0053 gs=002b efl=00210282
cwNep+0xaa86:
fffff880`048c4a86 8b4104 mov eax,dword ptr [rcx+4] ds:002b:00000000`00000004=????????
Resetting default scope

CUSTOMER_CRASH_COUNT: 1

DEFAULT_BUCKET_ID: WIN7_DRIVER_FAULT

BUGCHECK_STR: 0x3B

PROCESS_NAME: communicator.e

CURRENT_IRQL: 0

LAST_CONTROL_TRANSFER: from 0000000000000030 to fffff880048c4a86

STACK_TEXT:
fffff880`0a10ed70 00000000`00000030 : 00000000`00000001 00000000`45579864 00000000`00000000 fffff8a0`0190d1f0 : cwNep+0xaa86
fffff880`0a10ed78 00000000`00000001 : 00000000`45579864 00000000`00000000 fffff8a0`0190d1f0 fffff880`048c4de6 : 0x30
fffff880`0a10ed80 00000000`45579864 : 00000000`00000000 fffff8a0`0190d1f0 fffff880`048c4de6 fffff8a0`11d15000 : 0x1
fffff880`0a10ed88 00000000`00000000 : fffff8a0`0190d1f0 fffff880`048c4de6 fffff8a0`11d15000 fffff8a0`11d16878 : 0x45579864


FOLLOWUP_IP:
cwNep+aa86
fffff880`048c4a86 8b4104 mov eax,dword ptr [rcx+4]

SYMBOL_STACK_INDEX: 0

SYMBOL_NAME: cwNep+aa86

FOLLOWUP_NAME: MachineOwner

MODULE_NAME: cwNep

IMAGE_NAME: cwNep.sys

DEBUG_FLR_IMAGE_TIMESTAMP: 5202c943

STACK_COMMAND: .cxr 0xfffff8800a10e390 ; kb

FAILURE_BUCKET_ID: X64_0x3B_cwNep+aa86

BUCKET_ID: X64_0x3B_cwNep+aa86

Followup: MachineOwner
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