I managed to get it to work with another repack, but apparently the invite key (I) doesn't work in Group Sex. It worked in normal Free H though.
Ideally, I'd get Koikplugin to work with Better Repack R6, though, rather than have two versions of the game, so if you could help me understand what exactly went wrong with the whole 'something wrong, stop process' thing I'd appreciate it.
The whole problem is mod compatibility. Repack authors cannot solve this problem. The mod responsible for group sex is poorly compatible with the main build and sooner or later causes quite significant errors. It is for this reason that the mod is not included in the main build and is not included in the recommended mode (in the case of the installer).
Given the fact that this problem has not yet been solved for quite a long time, it will probably not be resolved quickly. Although everything can be.
As an option, you can write to the author Better Repack R6 about the prospects for the inclusion of the mod in the main build
You also need to read about mod compatibility. In particular, how does the mod, which is for group sex, work. Some of the functions of this mod are outdated, some have been implemented in other mods. Therefore, errors in its use arise for several reasons, and it is rather difficult to solve it.
Currently, this issue is resolved only in a separate installation.
Here is an example installer.
#2,308 Selecting one of the presets highlights some modes and removes others. The same problem - the choice of the harem mode excludes some functions of the recommended mode and vice versa