Since updating to 10.8.2, I'm getting this message. Anyone know what's causing this? Thanks!
Path: /usr/libexec/UserEventAgent
Identifier: UserEventAgent
Version: 46.23
Code Type: X86-64 (Native)
Parent Process: launchd [259]
User ID: 501
Date/Time: 2012-09-17 03:54:05.757 -0600
OS Version: Mac OS X 10.8.2 (12C53)
Report Version: 10
Interval Since Last Report: 14164 sec
Crashes Since Last Report: 1
Per-App Crashes Since Last Report: 1
Anonymous UUID: 76999171-D3E0-2FDD-8E42-E219522CFFBA
Crashed Thread: 2 Dispatch queue: com.apple.CrashReporter.ACRRDaemonPlugin
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Application Specific Information:
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFNumber length]: unrecognized selector sent to instance 0x5088002c7'
abort() called
terminate called throwing an exception
Application Specific Backtrace 1:
0 CoreFoundation 0x00000001043580a6 __exceptionPreprocess + 198
1 libobjc.A.dylib 0x00000001041973f0 objc_exception_throw + 43
2 CoreFoundation 0x00000001043ee6ea -[NSObject(NSObject) doesNotRecognizeSelector:] + 186
3 CoreFoundation 0x00000001043465ce ___forwarding___ + 414
4 CoreFoundation 0x00000001043463b8 _CF_forwarding_prep_0 + 232
5 ACRRDaemon 0x00000001071d985e init_activetime_module + 3988
6 ACRRDaemon 0x00000001071d9a0e init_activetime_module + 4420
7 ACRRDaemon 0x00000001071d627f ACRRDaemon + 29311
8 ACRRDaemon 0x00000001071d2e22 ACRRDaemon + 15906
9 libdispatch.dylib 0x000000010497f0b6 _dispatch_client_callout + 8
10 libdispatch.dylib 0x000000010498129b _dispatch_source_invoke + 691
11 libdispatch.dylib 0x0000000104980305 _dispatch_queue_invoke + 72
12 libdispatch.dylib 0x0000000104980448 _dispatch_queue_drain + 180
13 libdispatch.dylib 0x00000001049802f1 _dispatch_queue_invoke + 52
14 libdispatch.dylib 0x00000001049801c3 _dispatch_worker_thread2 + 249
15 libsystem_c.dylib 0x0000000104a28cab _pthread_wqthread + 404
16 libsystem_c.dylib 0x0000000104a13171 start_wqthread + 13
Thread 0:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x0000000104b9a686 mach_msg_trap + 10
1 libsystem_kernel.dylib 0x0000000104b99c42 mach_msg + 70
2 com.apple.CoreFoundation 0x00000001042f4803 __CFRunLoopServiceMachPort + 195
3 com.apple.CoreFoundation 0x00000001042f9ee6 __CFRunLoopRun + 1078
4 com.apple.CoreFoundation 0x00000001042f96b2 CFRunLoopRunSpecific + 290
5 com.apple.Foundation 0x0000000103c9689e -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 268
6 com.apple.Foundation 0x0000000103c2f18a -[NSRunLoop(NSRunLoop) run] + 74
7 UserEventAgent 0x00000001037e444e 0x1037e3000 + 5198
8 libdyld.dylib 0x00000001049b67e1 start + 1
Thread 1:: Dispatch queue: com.apple.libdispatch-manager
0 libsystem_kernel.dylib 0x0000000104b9cd16 kevent + 10
1 libdispatch.dylib 0x0000000104981dea _dispatch_mgr_invoke + 883
2 libdispatch.dylib 0x00000001049819ee _dispatch_mgr_thread + 54
Thread 2 Crashed:: Dispatch queue: com.apple.CrashReporter.ACRRDaemonPlugin
0 libsystem_kernel.dylib 0x0000000104b9c212 __pthread_kill + 10
1 libsystem_c.dylib 0x0000000104a27af4 pthread_kill + 90
2 libsystem_c.dylib 0x0000000104a6bdce abort + 143
3 libc++abi.dylib 0x0000000104c8fa17 abort_message + 257
4 libc++abi.dylib 0x0000000104c8d3c6 default_terminate() + 28
5 libobjc.A.dylib 0x0000000104197873 _objc_terminate() + 91
6 libc++.1.dylib 0x0000000104cf08fe std::terminate() + 20
7 libobjc.A.dylib 0x00000001041975de objc_terminate + 9
8 libdispatch.dylib 0x000000010497f0ca _dispatch_client_callout + 28
9 libdispatch.dylib 0x000000010498129b _dispatch_source_invoke + 691
10 libdispatch.dylib 0x0000000104980305 _dispatch_queue_invoke + 72
11 libdispatch.dylib 0x0000000104980448 _dispatch_queue_drain + 180
12 libdispatch.dylib 0x00000001049802f1 _dispatch_queue_invoke + 52
13 libdispatch.dylib 0x00000001049801c3 _dispatch_worker_thread2 + 249
14 libsystem_c.dylib 0x0000000104a28cab _pthread_wqthread + 404
15 libsystem_c.dylib 0x0000000104a13171 start_wqthread + 13
Thread 2 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x0000000000000006 rcx: 0x000000010c9ffbf8 rdx: 0x0000000000000000
rdi: 0x0000000000003873 rsi: 0x0000000000000006 rbp: 0x000000010c9ffc20 rsp: 0x000000010c9ffbf8
r8: 0x0000000104ae7278 r9: 0x000000000000001d r10: 0x0000000030000000 r11: 0x0000000000000202
r12: 0x000000010c9ffd80 r13: 0x0000000104995e08 r14: 0x000000010ca00000 r15: 0x000000010c9ffc60
rip: 0x0000000104b9c212 rfl: 0x0000000000000202 cr2: 0x0000000104a6bd3f
Logical CPU: 0
Binary Images:
0x1037e3000 - 0x1037e5ff7 UserEventAgent (46.23) <5949DE02-A18B-387F-9B0B-955FA3E70442> /usr/libexec/UserEventAgent
0x1037f1000 - 0x103ac1fff com.apple.security (7.0 - 55179.1) <639641EF-8156-3190-890C-1053658E044A> /System/Library/Frameworks/Security.framework/Versions/A/Security
0x103bf6000 - 0x103bf6fff com.apple.ApplicationServices (45 - 45) <A3ABF20B-ED3A-32B5-830E-B37831A45A80> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices
0x103bf9000 - 0x103bf9fff com.apple.Cocoa (6.7 - 19) <1F77945C-F37A-3171-B22E-F7AB0FCBB4D4> /System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa
0x103bfc000 - 0x103f58fff com.apple.Foundation (6.8 - 945.11) <A5D41956-A354-3ACC-9355-BE200072223B> /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
0x104179000 - 0x10417aff7 libSystem.B.dylib (169.3) <365477AB-D641-389D-B8F4-A1FAE9657EEE> /usr/lib/libSystem.B.dylib
0x104181000 - 0x104181fff com.apple.Accelerate (1.8 - Accelerate 1.8) <6AD48543-0864-3D40-80CE-01F184F24B45> /System/Library/Frameworks/Accelerate.framework/Versions/A/Accelerate
0x104186000 - 0x10429e92f libobjc.A.dylib (532.2) <90D31928-F48D-3E37-874F-220A51FD9E37> /usr/lib/libobjc.A.dylib
0x1042be000 - 0x1042befff com.apple.Accelerate.vecLib (3.8 - vecLib 3.8) <B5A18EE8-DF81-38DD-ACAF-7076B2A26225> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/vecLib
0x1042c1000 - 0x1042c1fff com.apple.vecLib (3.8 - vecLib 3.8) <794317C7-4E38-338A-A874-5E18001C8503> /System/Library/Frameworks/vecLib.framework/Versions/A/vecLib
0x1042c5000 - 0x1044aefff com.apple.CoreFoundation (6.8 - 744.12) <EF002794-DAEF-31C6-866C-E3E3AC387A9F> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
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