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As I wrote above: delete file "kuid2 61392 4053 21.tzarc" (i.e. this file on your HDD/SSD, not the asset in CM) and run a DBR.

My version 21 came with Coal Country DLC.

Delete file "kuid2 61392 4053 21.tzarc" and run a DBR: the game will then use version 18 (works in 106618).