The plug isn't working or just my file doesn;t pop up?

Hey @arjit27singh this is a pretty good thread too that covers a bunch of the issues. If you’re on PC this is a workaround:

Thread: Don't work lottie extension AE - #63 by christie_shin

Workaround:

Install ZXP file manually.

  1. rename your .zxp file to .zip
  2. unzip the zip file
  3. drag that unzipped folder into the folder (on PC)
    C:\Program Files (x86)\Common Files\Adobe\CEP\extensions\
  4. Create a registry entry “PlayerDebugMode” with String value 1 in
    HKEY_CURRENT_USER/Software/Adobe/CSXS.5
    (To create and modify registry entries you can search for the program “regedit” in the windows menu)