As I wrote on Hongfire without realizing it's not functional recently:
Hey, I've got a relatively simple solution for all problems with this pack and also - it might help the creator a bit to know that? I used to have broken installation myself, used to have bugs and broken game but it helped me without uninstalling anything and everything works - heels, translations, dlc, skins, everything as it goes in EMF 0.4 (outdated). Here you go - might help you:
1. Install Honey Select, standard DLCs and patches.
2. Install Party DLC.
3. Install EMF 0.4 - normally - with all mods, 4k, translations etc.
4. Reinstall Party DLC (really - over EMF). I had to use japanese system emulator for that on win10 - otherwise I couldn't reinstal because it already had one installation and detected it. Opening with normal admin rights didn't help, japanese admin rights allowed reinstallation.
5. Paste the best, new translations and additional files assisting them for Party DLC.
6. Drag everything over IPA.exe.
7. Run exe files with update, slider - normally. Update first, slider next.
Here you go. It might be a mysterious riddle but it seems that party DLC doesn't override any crucial files from EMF but it messes with the game system itself and it's needed to prevent bugs. Personally, I've experienced the bugs with not being able to enter the 2nd H-scene (1st worked well, then everything crashed with 2nd scene: blank menus, girl standing in her conversation pose, colors and lights broken). Also, I've had the old loader and the old exe - v. 1.11 instead of 1.20, you know - the old lobby background, info about 1.11 instead of updated 1.20...
Now - all fixed, everything works fine. I've got everything - 4k skins, heels, graphics, everything - added a few mods afterwards, everything works, no crashes, no problems.
I've came up with the idea after thinking what might be wrong with which files if the problem lies in such types of bugs, if the pack is outdated etc. etc. It was just logical? For me - it helped - try and give the response if it also helped for you? Greetings.