Having troulbe loading custom bikes

[TheRedDevil]

Every bike I try to install is not loading in properly, it keeps throwing up a bunch of text saying it could not load swing arm, number plates, wheels. but all the plastics and details from the pegs up will load properly. I don't know what's going on or how to fix it. All the rider gear I install works just fine. I looked through a couple posts here from people with similar issues with wheels not loading, but none of them gave me a conclusive answer to fix it.