If not solved Try this instead. go to C:\Program Files (x86)\Steam\steamapps\common\dota 2 beta\game\dota\materials if you don't have the materials folder create one. download this and extract it into the materials folder and then you're done.
still not work? go to your loader and click the update button
Comments
updating
Reinstall Ensage in your main drive install
If not solved Try this instead. go to C:\Program Files (x86)\Steam\steamapps\common\dota 2 beta\game\dota\materials if you don't have the materials folder create one. download this and extract it into the materials folder and then you're done.
still not work? go to your loader and click the update button