CB's DepLoader was unable to download required library PotionExtension-1.7.10-1.1.0.jar

[UltimusLight]

Hello
I'm trying to play minecraft with mods but I can't because I get:

 

CB's DepLoader was unable to download required library PotionExtension-1.7.10-1.1.0.jar
Check your internet connection and try restarting or download it manually from
https://dl.dropboxusercontent.com/s/3m5bsoo6wyziexa//PotionExtension-1.7.10-1.1.0.jar and put it in your mods folder

 

And I have downloaded it and put it in the mods folder, but it keeps putting the same thing on me, the problem is that I give it to play, the error appears, I look at the mods folder, and the file that I have put is not there, it is deleted , please help me, and thank you very much for taking the time.

[LexManos]

1.7 is no longer supported on this forum.

Please update to a modern version of Minecraft to receive support.