Nodes not connecting in VAB

[mmmmminty]

The attachment nodes in the VAB aren't connecting together, before I can connect the Interstellar parts together i have to rotate them upside down. Which is stopping production of power..... Everything else works fine, its just the parts in Interstellar...

[sswelm]

seems to me you are using an obsolete version of KSPI which is no longer maintained.

It will not work in KSP 1.2