Can confirm this issue is present. Apparently your arty will get its old loadout. Example, in my case with Pz Slf IVb, when modpack is active it retains the old HE-HEAT-AP ammo lineup. since that conflicts with the current lineup of HE only, it causes a contradiction that prevents loading any ammo and consumables.
Basically speaking, it's an error, and I dunno which mod is causing that. It SHOULDN'T be Zorgane's since that only affects sound, and not the garage itself.
here's the logs. love that Logs Archiver, aslain