New Ultimaker 3 won't load PVA

[djnorris_2000 0]

I've got a new Ultimaker and am setting it up for the first time, following the instructions in the set up guide.  I've loaded both print cores fine - AA0.4 in 1 and BB 0.4 in two - and the instructions now tell me to load the PVA materials into core 2 but when I try this I get an error saying "Material 2:  Ultimaker PVA Natural is not compatible with the BB 0.4 PrintCore 2."

I've looked around online and it seems like PVA should work with that print core, but I can't find anyone else who's had this problem.  Any ideas what I could do, or where I should look for a solution?