Hi Jmeager,
Perhaps it's as simple as that one (or more) of the modules was wrongly connected to the -12 V? It's usually the red line on the ribbon and usually the white line on the PCB board. Please check that carefully as well for each module and also against each of the manuals that usually comes with the modules to see where the -12 V is (or download them from the respective manufacturer's websites). Of course please follow the instructions above from Lugia too!
Before blowing up more power supplies, the best thing is to take your modular system to your dealer (if that's possible) and have them tested it, if they blow up yet another power supply at least it wasn't your fault ;-)
Kind regards, Garfield Modular.
For review reports of Eurorack modules, please refer to https://garfieldmodular.net/ for PDF formatted downloads