This is the pak01_dir.vpk file which I use when playing Portal 2, it has been modified to allow all my current Black Edition uploads (including Aperture Innovators) and Boba Fetts Portal gun retexture to work together correctly with no errors.
I am uploading this as a separate file for those who are receiving errors when using the .vpk files from the individual mods.
Firstly you will need to download each of these mods in order for this to work correctly (since this file is intended for those who already have them).
Black Edition - Quality Restored 2.4
Black Edition - COOP Mode 2.4
Black Portal 2 Gun Re-texture (BOBA FETT)
Aperture Innovators Hard Hat
Aperture Innovators Ventilation Apparatus
Simply install all those mods (in any order) and then use the pak01_dir.vpk in this fix instead of the others.
Any problems let me know ( there shouldn't be)
Happy Gaming and enjoy the new dlc, I know I will.