Meisbergerj2

When everr I try to load any on the demv mods they load up and with the wheels under ground and I cant move them I have tried adding in kerbals and and still nothing I have dropped them from above and the still do the same thing I have uninstalled the mod and intalled them still nothing they are all on .18.2 and my ksp is on .20.2 how can I fix this