I'm using CC:Tweaked, and my mining program is checking for the forege:ores tag to determine what blocks it should dig.
I noticed that my turtle passed right by an ore, and when I checked it was Simple Ores tin.

After double checking with turtle.inspect() it looks like none of your ores have any tags?
I would expect at least forge:ores and forge:ores/copper (or whatever ore it is).

Thanks,

SimpleCoreLib-1.16.4-2.0.2.0
SimpleOres2-1.16.4-2.4.2.0
Forge 35.0.7
MC 1.16.4

... It helps if I don't have the data-generation code that creates block tags commented out. Fixed by commit 44ead01. Issue probably needs to be addressed in 1.15.2 & 1.14.4 branches as well No, 1.15.2 and 1.14.4 have their tags okay. Fixed in new release on CurseForge, SimpleOres 1.16.4-2.4.2.1