abap unit test not working after transport

Hello Abapers,

I have created ABAP-Unit-Tests for my FM and everything is alright in the first system A. The problem comes when I do the transport to another system B. There I try to run  the Tests and I get the message:

1- "Unit tests processed successfully; 1 programs, 0 classes, 0 methods"

or

2- "Active version of function group <FM> contains no executable tests"

I checked the settings on B and should be right:(see attatched)

Can someone tell me why is it not working? or why does B not detect the tests?

thanks in advance.

Neili