I'll have to run more combinations to see if I can narrow down which worlds when selected cause the process to pause.
I got really confusing results as I tested different combinations. First I ran the following combinations:
1) Selected all Skyrim world spaces: Generated to completion without issue.
2) Selected all Skyrim + Dawnguard world spaces: Generated to completion without issue.
3) Selected all Skyrim + Dragonborn world spaces: Generated to completion without issue.
At this point, I was confused since I expected to run into an issue with either #2 or #3, since those two combinations cover all the world spaces.
To be thorough, I tested a few more combinations:
4) Selected all: Stops generating as in originally described issue (sanity check test to ensure the issue was still present)
5) All Skyrim + All DG + DLC2ApocryphaWorld: No issue
6) All Skyrim + All DG + DLC2SolstheimWorld: Stops generating as in originally described issue.
#6 suggests the issue is related to DLC2SolstheimWorld, but #3 from earlier (which also had DLC2SolstheimWOrld) ran fine so maybe there is some weird interaction somewhere (like with the DG world spaces). I ran two more combinations to explore it:
7) DLC2SolstheimWorld + SkuldafnWorld: No issue.
8) All Dawnguard + DLC2SolstheimWorld: No issue.
Then I had a really strange idea for a test... So far when I select all, I was using right click --> select all. So I tried one more set of tests with surprising results.
9) Selected all manually (instead of right click): No issue!
10) Right click => Select all, then toggled DLC2SolstheimWorld off/on: Issue back! (toggled just to check if that did anything)
11) Right click => Select all, then toggled SkuldafnWorld, Sovngarde, Tamriel, off/on: Issue still back (toggled other options for thoroughness)
This result was really weird. However, if that was really the problem I would've expected other people to have run into this as well.
Might do a few more "right click tests", like trying it without Enhanced Landscapes and also updating USSEP to 4.1.6.
Edited by nanashi, 16 December 2018 - 01:09 AM.