Thats a classfile error, those I still have and can see, but not edit. You really dont need to add the weapons.ru or plane.ru. those are only used if you want to change names of the plane or weapons. try deleting those and see what comes up. If the same problem happens, then it's something to do with the classfile which I still have for when I do get my new tower.
To anyone else having problems, I cant help you unless you tell me what version of IL2 you're running and if your on UP, DBW, or modact. I know that some of these can cause problems alone (not trash talking any of these here guys

) But normally it's my end because these are a work in progress, which means that they will have some issues here and there.