The master configs don't include versions 16 or 17 of Reikas mods. Some new IDs are claimed, mostly by Geostrata.
Eyamaz, you'll need to I'm not sure what allocate a new ID for Geostrata in its upcoming updates: It conflicts with but I'm not sure in how many ways asks for 10002 (minus 256), which is taken up already in extrautils.
When I look at the spreadsheet, I see IDs there shifted + 256 from what I'm seeing in the configs.
When I crash, Reika's mod is telling me that Extrautils is not asking for +256, and is asking for exactly what is in its config, which conflicts with Geostrata's +256.
Final edit: This fix looks to be exactly in line with your current ID conversion scheme. I Solved it by changing this new line in the updated Geostrata config:
I:"Crystal Cluster"=10002
needs to change to
I:"Crystal Cluster"=9746
I believe this is a reasonable prediction for what the FTB team will select, since it's 1-up from a preexisting small item block.
Fixing this allowed the game to get to the point where it gave me a block id conflict text file.
Unfortunately, I cannot predict what the FTB team's IDs will be for this, as Geostrata's IDs sit compactly in the middle of a break in the otherwise large and intermittent AM2 allocation. The new Geostrata block IDs will have to come from somewhere else, and really, any place seems as likely as the next.