Hi Mathias,
I am having the same issue with Complex Forms, but for some reason the solution you posted isn't working for me. I'm still getting no value for the threading pool.
I've tried the solution you posted several times, with resets to the program and swapped data files in between. Tried multiple CFs and skill specs, various naming schemes, even tried creating a new software skill and tying everything to that. Threading pools only ever show up for the original CFs, never for my errata'd copies, no matter how much or how little I try. I know the solution you posted has worked for lots of other people, not sure what I'm doing wrong.
I'm using a PC, HeroLab for Windows 8.2a, Shadowrun 5th ed version 2.1. I have all the data packages except Howling Shadows.
Thanks for any insights!