What happens:

Sometimes(not every time), when loading the game, it freezes on "Loading - Finishing up" "LoadComplete - Crafttweaker2" and then then window will become "Not Responding".

What you expected to happen:

The game loads normally.

Script used (Please Pastebin or gist your script, posting an unpasted or ungist'd script will automatically close this issue):

https://pastebin.com/deVaN4fW

crafttweaker.log file (Please Pastebin or gist your file, posting an unpasted or ungist'd file will automatically close this issue):

https://pastebin.com/31z3H9iM

Affected Versions (Do not use "latest"):

• Minecraft: 1.12.2
• Forge: 14.23.5.2874
• Crafttweaker: 1.12-4.1.19
• Using a server: No
• If yes, does the client have the exact same scripts?

-Modpack Mod List(I am the Modpack Author): https://pastebin.com/Xn7PgDzn

Your most recent log file where the issue was present:

https://gist.github.com/JoeJoeTV/3d5c45697d7885741c7529bf7ba94613 (Had to use gist, because file was too large.

I have never been able to reproduce this, it is possible it will be fixed in the next version of CraftTweaker when using FastWorkBench, but I can't offer anything of value right now.

Thanks for replying so fast. Was this bug reported before? and will it help if I install FastWorkBench now or only with the next upcoming CraftTweaker Version?

related to:
#829
adding #disable_search_tree to your script may fix the issue.