Visual Composer 6.0SP1 with EP6.0SP6 (Sneak Preview)

Hi,

i'm trying to setup the currently available EP6.0SP6 (Sneak Preview) in combination with the Visual Composer 6.0SP1. So far the Portal and its connections to defined R/3 Systems are working fine (connection tests are successfull) Unfortunately the Visual Composer doesn't show any of the R/3 systems defined in the Portal, although a connction to the portal itself is possible.(User mapping, System aliases are all set).

Did anyone made the same experience or was able to setup this environment ?