Left 4 Dead models all became error

[MC117]

Ok, I opened up Garry's Mod just recently after the three latest updates occured and when I immediately tried to open up my Left 4 Dead models, they all became error except for a few, though it appeared that they were the same models from HL2. And also the GMod Setting interface changed as well which made to show that HL2 Episode 2 is unavailable and showing no Left 4 Dead 1 or 2 content even there. What's the problem?

[playelite]

Try reinstalling the models.

[MC117]

Using Mount2 again?

[editline]10:00AM[/editline]

Ok, reinstalling worked. Thanks playelite.