BRF+ cannot bind structure to DDIC

Hi,

I really ran into something strange with BRF+ - I cannot seem to bind a new structure to the DDIC at one of our customers sites. The client is running ECC 6.0 EHP 6, . It comes up with a warning saying “Are you sure you want to delete the binding?" (please see screenshot attached), and then it just does not allow one to create the binding. On our internal IDES system, this works fine (EHP7) - is this a known issue?