You don't state which R62 you're talking about so I used CM3.3 to download these 2 R62 subway cars:
NYCTA IRT R62 Subway Car,<kuid2:44558:62:4> by JeffMorris. It's a TS2009 asset. It installed and commited without error.
NYCTA R62 Subway car,<kuid:58843:321> by Magicland. It's a TRS2004 asset. It has 2 errors that have to be fixed before it can be used. Use CM to Edit in Explorer, open the config.txt file to change a.psit37 to a.pass37. Then in the body folder, run the main mesh thru PEV's PM2IM utility to correct a texture problem. Save and commit.
Bob Weber