Application Crash because of active assertions beyond permitted time.

Question

The crash report details as follows
Exception Type:  00000020
Exception Codes: 0x8badf00d
Highlighted Thread:  3
Application Specific Information:
MyApp[123] has active assertions beyond permitted time:
    <SBProcessAssertion: 0x4b52f0> identifier: CoreLocationBackgroundClient process: MyApp[579] permittedBackgroundDuration: 600.000000 reason: finishTask owner pid:123 preventSuspend  preventIdleSleep
Elapsed total CPU time (seconds): 13.980 (user 13.980, system 0.000), 1% CPU
Elapsed application CPU time (seconds): 0.251, 0% CPU
and thread 3 is
Thread 3 name:  com.apple.NSURLConnectionLoader
Thread 3:
0   libsystem_kernel.dylib                  0x30e67004 mach_msg_trap + 20
1   libsystem_kernel.dylib                  0x30e671fa mach_msg + 50
2   CoreFoundation                          0x381ea3ec __CFRunLoopServiceMachPort + 120
3   CoreFoundation                          0x381e9124 __CFRunLoopRun + 876
4   CoreFoundation                          0x3816c49e CFRunLoopRunSpecific + 294
5   CoreFoundation                          0x3816c366 CFRunLoopRunInMode + 98
6   Foundation                                   0x373a7bb2 +[NSURLConnection(Loader) _resourceLoadLoop:] + 302
7   Foundation                                      0x373a7a7a -[NSThread main] + 66
8   Foundation                                      0x3743b58a __NSThread__main__ + 1042
9   libsystem_c.dylib                       0x333c972e _pthread_start + 314
10  libsystem_c.dylib                       0x333c95e8 thread_start + 0
The application uses GPS. Any idea why this crash is happened ???? Please help me

Answer 1

Hi TMH55:
I was also curious about these "stacks+MobileCal…" crash logs and did some research into the problem.  I just published a FAQ on the subject: "MobileCal has active assertions beyond permitted time."
The bottom line is that these logs result from network timeouts, e.g. Calendar attempted to sync with iCloud, but the request timed out due to a slow or interrupted network connection.  I see an average of two of these logs per day and they often correlate to when I'm in an area with poor cellular data coverage.  They're not affecting my battery life. 
I noticed them after updating my iPhone 5 to iOS 7: iOS 7 may be more sensitive to network timeouts or may simply be logging these types of events more than in iOS 6 and earlier. 
Unless you're seeing dozens of these logs per day, I'd ignore them and look into other potential causes for the battery issues.
Dr. Smoke
Author, Troubleshooting Mac OS X
I may receive some form of compensation, financial or otherwise, from my recommendation or link.