[Bug] Error after purchasing R&D Lab

So I installed some mods for GDT and made a new game. Once I reached the last office and purchased the R&D Lab, this error popped out:

Error Uncaught error. Please report this to support@greenheartgames.com: Uncaught TypeError: Cannot set property ‘complete’ of undefined (file:///C:/Program%20Files%20(x86)/Steam/steamapps/common/Game%20Dev%20Tycoon/mods/UltimateLib/UltimateLib.js:1852) Please restart the game.

Enabled Mods: [“gdt-modAPI”,“UltimateLib”,“CAMELOT-EXP-PACK”,“TweakMod-AbescoUG”,“InfoStatsMod-AbescoUG”,“c9f233bc-31e1-41f1-ab58-0f2206193530”,“303bcc71-c7c5-4ebb-9e7e-60a95bb987c9”,“9531397f-4e34-4538-af46-eb715c751413”,“ExpPackMod”,“CheatMod-kristof1104”]

How do I fixed this? I had no errors before buying the R&D Lab.

I moved 3 posts to an existing topic: Official Mod Code Error Thread - For Mod Users