Getting communication_failure at RFC Call starting new Task

Hallo Everybody,

I´ve got an Issue that when trying Use my RFC that I always get Sy-Subrc 2 - Communication Failure....

I have no idea anymore what to do.

I post my Source Code here and hope u can tell me what´s the issue or how to find out.

I have another rfc - almost identic, working.

I´m checking everything since hours, I hope someone has a hint for me.

Thx so much in advance.