Problem description:

For some players on Unity one or more machines are always displayed as "wrong or invalid machine". But other players can use these machines.
GN has never answered these tickets!!!

The players that have these problems have tried the folowing options without success
- full check start
- checked the option "delete cache on exit"
- deleted world cache maually

Known ones by me:
Lunus Stone Cutter - 22077/28306
Lununs Gem Cutting Bench - 22082/28275