I am trying to patch my own programs which I created for this task.
Unfortunately, once I do really simple patches and send the App to my iPod touch, it crashes as soon as I launch the App.
I'm using IDA pro 6.2 with patching menu. I open my process using the ARM processor option.
Is it correct?
Try to use the command line tool ldone on your iDevice before running it.
There can be some problems with the signatures in the mach-o file itself, that can be fixed by resigning the executable.