So, working on the game some more. Finally got the Relationship menu to work, but I had to switch the engine from 1.5.2 to 1.6.3. This has caused a bunch of new issues. I can finally Play-test in 1.6+ but if I go into the Database and do a test battle in the Troop tab, it just opens the game in Test-Play instead of just starting the fight. If I go to 1.5.2, then I can test play just fine and I can battle test in the Troop tab just fine, but the relationship plugin crashes out.
The joys of working on a game alone.