Force-Close anytime (Debug and Release)

Hi all,

my problem is that my app will be force closed wenn I debug it.

I have comment all my code blocks and try:

MsgBox("Test", "INFO") in Main Activity,

but there is also a force close.

So my Question is very clear!! Why does it react in this way ??
Please help

My Version: Basic4android 2.22

Thanks Elektriki