Why the hell has my custom skinned hexed model broke?

Been very irritated because I was making a background in Garry’s Mod, just after one restart from an update, all of a sudden my model decided not to work.

I get a model missing error, it’s an addon and it was working fine till now. Nothing seems wrong with the model or anything it just suddenly broke on me. I’ve done a reinstall, didn’t do anything.

The only thing that comes to mind is if you were mucking about in the models folder in your addons folder and accidentally moving or renaming the model file.

I had a backup .rar if the one in the addons messed up (somehow). But tried the backup copy, I still get the same problem. Was there an update recently for the non-Beta GMod?