Android debugging a crash on application start

I'd like to get Android debugging to work (attach to process, breakpoints, etc) and I think I do, but my main problem right now is that my Android build breaks upon start up.

Because it breaks and crashes instantly, I don't have any time to attach monodevelop to the process on my phone. What's the best way for me to fix this?

For future reference:

• I'm using a Nexus 5, Unity 4.6xx and MonoDevelop OR Visual Studio

• I've installed the android sdk and usb debugging drivers already.

• I've gone through the routine of enabling adb and checking to see if adb sees my device over my network; It does.

Thanks in advance.