FNRA dump

Hello, transacion FNRA executes normally in 4.6, but we did an upgrade to 4.7 and the transaction just doesn't work, it doesn't even show the main screen, it throws a dump. I run the debugger and it starts on function S_UI_CLASS_DEPENDENCIES and nothing there goes wrong, but when it reaches ENDFUNCTION and tries tu return to the caller, it throws the dump, so i have no idea to detect where exactly the error is.

Any ideas on this?

thanks in advance.