Cars dissapearing from select menu??

This is actualy a bug with the game this is a solution i found:
For a reason i ignore , you may have to go to mod section on Beamng and unpack the mod on vehicles section :

 

i bet that he had a mod !

 

But this issue appear sometimes when you install mods related to the /common/pickup files , unlike you i try to help !

 

ok i don't want to be rude , just constructive for helping and , i perfectly know this problem : http://www.beamng.com/threads/belaz-75710-installation-instructions-in-1-post.19431/page-2 or http://www.beamng.com/threads/stage-3-variable-turbo-for-v8-4-5-pickup-and-roamer.19481/ or http://www.beamng.com/threads/pickup-and-roamer-diesel.19677/ and this is releated to mod who make deasapear original cars when there are not unpacked , nadeox say that they are a bug and they working on !

 

Just because i had exactly the same problem and some other user too, all had the pickup and roamer who disapear , so , i bet it's the problem ! And if it's not that , at least he try something !
Where is your help guys ?