You have a 160 version that is using Ray's "Aircraft_Inventory" and "Planesets" folders.
In anticipation of his release of his major upgrade I built a system that uses the "Multiplayer_Inventory" and "Multiplayer PlaneSets" with the old files in them.
When I hit problems with some of Ray's FMs I stopped using his new stuff.
The simplest thing would be to install the "UAW160 MP2021" folder, or to use 1.29 which uses Ralf's weapons files