Hi, Just for completeness, I wanted to add my 5100PS units to the Toolkit database. I did - Add Unit Gave them a name and a Unit address (No Serial or anything else) They were added to the database as Unit Type XPS51. When I went to Edit one of the units I got Error - 2064 The Selected C-Bus unit is not supported by this version of C-Bus Toolkit. Please visir ....... Martin