Execution after Breakpoints leads to invalid instruction

Dear All,

I have the problem that I could’t do any debugging after I reached a breakpoint (no single step or let run again), pc never change.

When the system starts witout breakpoint it run, I could halt, make single steps and let run again. But as far as I use a breakpoint I have this problem!

My Core is a ARM 946E-S.

Any Idea what could be wrong?