Hi Paul, is it logging any message in SLG1? If so, please paste here the screenshot.
I would guess this error message is due to LDAp connector. SLG1 would tells us some clues, about RFC errors, like "Error in when opening a RFC connection"..
Other possibility is a duplicate entry in table GRNFCONNGRPTYPE for the system you are performing the analysis. Please check.
Let us know,
Thanks.