Player Model Broken

For whatever reason, when I try to change my playermodel, it changes me to Kleiner. No matter what. Any ideas?

try reinstalling Garrysmod, may be because the code or something that changes your player model is fucked, redownloading it should fix it. if all else fails, ask someone more intelligent than me.

i have had the same thing for years…im guessing like what MrBuBB said try re-installing it