Here is the fix for anyone that cares:
- Extract the mod
- Open "..large-storage-tank_1.2.1/prototypes/entity/large-storage-tank-entity.lua"
- Change line #16 from
"storageTank.flags = { "placeable-player", "player-creation", "not-rotatable" }"
to
"storageTank.flags = { "placeable-player", "player-creation"}"
- Save,
- Compress to Zip
- Replace Mod in mod Files
I provide absolutely no warranty for this. If it breaks your save, or bricks your computer, or something; That is absolutely a 'You' Problem. I tested it for maybe 5 seconds. It appears to be working. Ymmv.