This is really bizarre. REALLY. If these dedi’s in question can’t run any mod it sounds like an issue possibly with your host, but I could be wrong. Maybe there is something awry with the uploading new mods process all of a sudden? I can really only speculate and theorize at this point. Let me sleep on this one and see if I can come up with anything suitable as a possible attempted fix while I sleep or in the morning. I’ll check back then.
Sorry, wish I could be of more help on this right now, but I’m starting to run on fumes xD