How about app crashing after just starting mining with the CPU miner? Here's the short version of what the crash reporter generates:

Process:         MacMiner [9020]
Path:            /Applications/MacMiner.app/Contents/MacOS/MacMiner
Identifier:      com.fabulouspanda.macminer
Version:         1.4.5 (1405)
Code Type:       X86-64 (Native)
Parent Process:  launchd [203]
User ID:         501

Date/Time:       2013-07-19 14:59:12.834 -0400
OS Version:      Mac OS X 10.8.4 (12E55)
Report Version:  10
Sleep/Wake UUID: A4B38065-B8C3-4209-9C79-57390591AEFA

Interval Since Last Report:          120961 sec
Crashes Since Last Report:           105
Per-App Interval Since Last Report:  117 sec
Per-App Crashes Since Last Report:   1
Anonymous UUID:                      EB33D52C-4C2A-B49B-F33E-44B2D2576F15

Crashed Thread:  0  Dispatch queue: com.apple.main-thread

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000

VM Regions Near 0:
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I forget, what miner (bfg? cg? other?) runs in the CPUminer? Just making sure there's no conflict there. Thanks!