While developing our driver, we've noticed that the *.ips report that contains the stack trace of the crash is not always generated. To be clear, you're talking about DEXT level users space crashes, NOT kernel panics? I've assumed below that you're dealing with standard crashes, but please let me know if I've misunderstood. I'm wondering why this report may not get generated. So, the first step here is to figure out what actually happened, which means digging through the console log. In general, there are multiple components tracking (notably, launchd) any system component (including DEXTs) and they'll be notified of your process's death, including how/why it died. If you're on development hardware then there are some tips in Your Friend the System Log that can be useful for quickly getting at this sort of data; however, I'd generally trigger a sysdiagnose and use that console archive. The big advantage of the sysdiagnose is that you capture everything, which means you're not going to miss data if so