It's not explained anywhere but yeah, season 2 must be installed in a separate directory from season 1, if you copy the files in the old game directory you will surely receive a lot of errors due to repeated variables, incompatibilities, etc.I guess I didn't get the memo somewhere or other because season 2 clobbered season 1(chapter 14 load) and season 2 wouldn't run either. I copied the download for season 2 into my existing folder and extracted it. This fracks up Renpy it appears with all kinds of crap. Too much to list.
I thought maybe season 2's Koga mod did it so deleted everything but the downloads, re-extracted season 1, Koga mod for 1, season 2, Koga mod for 2. Nope, wasn't it. I deleted my folder again, re-extracted season 1 and season 2 without the Koga mods and nope, still crap.
Lastly, I started over yet again and installed chapter 14 into its own new file folder, extracted it and it runs fine. I did the same for season 2 and it runs fine too.
My saves were even retained but I deleted my original game saves folder along with the whole rest of the install so I don't know how that works.
I installed a fresh copy of season 2 in its own folder and it imported the last save from season 1 and eretang is a oh tay.
If the actual game saves are not in the game saves folder where are they? There are entries in game saves folder but the actual data snapshots of the saves is somewhere else?
Should I mention that I run Linux?
The idea is that you can have both seasons installed on your pc, each one with its own gallery but sharing the saves folder.