OK, I read the in developer blog and had a couple for dry runs to figure out how the things are intended to work ...
Thus, I'm sharing my findings for those who encountered the same issues by migrating EBXL worlds from 1.6.4 to 1.7.10:
- It seems that EBXL fix 3.15.8B is only for worlds that are created with EBXL 3.15.8
- To open world that are created with earlier versions of EBXL, you need tokeep and modify extrabiomes.cfg to prevent a crash:
I think, I've found my migration path. As soon as I'm successfully finished, I will report the detailed procedure.
Yep that is indeed the issue, upgrading from older versions kept on the old quarterlogs by default to allow for backwards compatibility but the new names in 1.7.10 ended up resulting in them and they probably should have been fully removed, as people were given pleanty of time to make sure they that old forests had been replaced by that time.
Anyways on a completely different note I am going to have to step down as a member of the team, I have come to the conclusion that I have been putting myself under to much stress between trying to work on ExtrabiomesXL, and my own maintain my own free time. Getting home from a long/annonying day at work and wanting to relax, only to feel guilty because I know there is work to be done on ExtrabiomesXL and then getting neither relaxations or stuff done on ExtrabiomesXL and just felling at that much worse, is never good for oneself.
As such I am going to have to retire as a member of the ExtrabiomesXL development team. I might come back to mine craft modding one day but for now I am going to have to step away and wish Annysia and Scott the best of luck. (Maybe they will actually get v4 on out the door as I partially feel that I have been holding it back.)
Until next time I'll be out exploring the the wonderful world in which we are blessed to exist. (And who knows I may eventually get around to writing that factorio mod that I wanted to make, but always put off because I felt guilty every time I thought about spending time trying to do it instead of working on ExtabiomesXL.)