OK, so I have done some tests and your theory is at least partially correct. It's not the HLAs as innates component that is the root cause, but another SCS component.
So I ran a series of test installs in BWS to find the conflict. For each test, I started with a brand new BG2EE (Beamdog version) at the latest patch. I removed all components from BWS, except the initial required components (fixpack etc) that can't be deselected, then selected the listed mods/components for each.
Run 1:
Mods:
-Vampire Tales (all components)
-SCS (Initialise mod and HLAs as Innate components only)
Result:
BWS completes installation successfully, no errors or warning
Game starts as expected
Can create CMGMIR25 in game, a creature with a female thief avatar named "Miriam Delasol" (or something similar). No immediate errors, although she does not talk when clicked on
Conclusion:
No direct conflict between the components
Run 2:
Mods:
-Vampire Tales (all components)
-SCS (All components, except with those with external dependencies, ie Improved Ascension AI. Where there are choices, I used the ones I did in my previous failed install)
Result:
BWS pauses due to "NPCs go to Inns" component - not actually compatible with BG2EE (BGEE/EET only I think)
BWS errors on HLA as Innate component for CMGMIR25, as previously, continue without HLA mod
Game starts normally
When I try to create CMGMIR25 through the console, the game immediately crashes. Tried 3 times, same result
Conclusion:
While the HLA component isn't the direct cause, another SCS component is
NPCs go to Inns should be removed from the BG2EE selection
Searching the logs for CMGMIR25 brings up only one other reference - when installing "Make party members less likely to die irreversibly". As good a place as any to start
Run 3:
Mods:
-Vampire Tales (all components)
-SCS (Same components as run 2, minus "Make party members less likely to die irreversibly")
Result:
BWS completes installation successfully, no errors or warning
Game starts as expected
Can create CMGMIR25 in game, same behaviour as first run
Conclusion:
There is a conflict between Vampire Tales and "Make party members less likely to die irreversibly" component of SCS
At this point, I've checked the Vampire Tales tp2, and it seems the CMGMIR25 creature is from the main component, so narrowing down checks to that component specifically
Run 4:
Mods:
-Vampire Tales (main NPC component only)
-SCS (Initialise and "Make party members less likely to die irreversibly")
Result:
BWS completes installation successfully, no errors or warning
Game starts as expected
When I try to create CMGMIR25 through the console, the game immediately crashes
Conclusion:
Conflict between "Vampire Tales" component 0000 (the main mod component) and "SCS" component 4040 ("Make party members less likely to die irreversibly")
TLDR:
SCS Component 4120 should be not be available for BG2EE - it's pointless anyway since this is default BG2 NPC behaviour
SCS Component 4040 should be marked as incompatible with Vampire Tales component 0000