How to fix Script Compilation error in Witcher 3?

Question

Issue: How to fix Script Compilation error in Witcher 3?

Hello. I have picked up Witcher 3 recently on sale, and I loved it. I do mod my games, so I waited no time to get it done with this one. The problem is that after some time I started receiving Script Compilation errors which prevented me from launching the game in the first place. I wonder if there's a way to fix this?

Solved Answer

The Witcher 3: Wild Hunt is a critically acclaimed open-world RPG game released by CD Projekt Red in 2015. While initially, it had bugs[1] and other technical issues (similarly to the studio's newest release Cyberpunk 2077), the game was patched over the years and received a myriad of awards, including the Game of the Year award. To this day, it is praised for its storytelling, immersive worldbuilding, and believable characters.

Over the years since the release, the game has enjoyed a healthy modding community, which was very much supported by the developer. Modding[2] is a type of modification that allows players to change the game to their liking. These changes can be minor, such as new outfits for characters, or major, such as 4k texture overhauls. They can also impact the gameplay itself in many ways. Due to this diversity, many people opt to mod their games.

Unfortunately, players encounter issues with mods. Witcher 3 Script Compilation error was seen by many people who use mods in the game. This can be particularly frustrating, as it leaves two choices – either remove all the mods and play the game without them or don't play the game at all.

How to fix Script Compilation error in Witcher 3?

The main reasons for the errors lie within mod conflicts or buggy, outdated versions of mods. In order to fix Witcher 3 Script Compilation errors, users first need to make sure that the mods versions match their game version. For example, the GOTY edition is V1.31, while some mods might be created for V1.30 of the game.

Below we provide several methods on how to fix this problem. Before you proceed, we recommend you try out ReimageMac Washing Machine X9 PC repair tool that can fix the underlying issues on a Windows computer and resolve Blue Screen of Death crashes, registry[3] corruption, DLL errors, and much more.

1. Install the Unification patch

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You can download an official patch that makes GOTY and non-GOTY versions of the game identical when it comes to their files, which might solve the issue with mods you are having. This is the easiest solution that helped many players, so start from it:

  • Download the official Unification patch
  • After downloading it, extract the archived folder (right-click > Extract)
  • Mark content and Mods folder, right-click and select copy Download Unification patch
  • Open Steam, GOG, or another platform you are using for the game
  • On Steam, right-click on the title and select Properties
  • Go to the Local Files section and select Browse…
  • Press Ctrl + V to paste and replace the files in the relevant folders. Copy mods and contents folders

2. Reinstall your mods

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This might take you much longer, but it should help you fix the error.

  • Open Steam, right-click on Witcher 3, and select Properties
  • Click Local Files and select Browse
  • Here, you should see the Mods folder, if you have created one in this location
  • Delete the folder or its contents Reinstall Witcher 3 mods
  • Go to Nexusmods or another trustworthy mod website and redownload the mods, making sure that they are for the latest game version.

If you still encounter Script Compilation errors, mods might be conflicting – proceed with the next step.

3. Check mods with Script Merger

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While using Script Merger on already existing mods can be a solution, the ones that require manual intervention can be annoying to deal with. We provide the instructions below, however.

If you are using not a large number of mods, however, you could simply delete all the installed ones and then run Script Merger each time you install a new mod, so you know which one is causing the error.

  • Download and install the Script Merger for Witcher 3
  • Run the program and click on the three dots to find the correct location for your game files Download Script Merger
  • Under Conflicts, click Refresh
  • Select your mods and click Merge Selected Script
  • You'll be given a list of which mod conflicts can be resolved automatically and which ones need to be done manually. Click OK. Use Script Merger
  • You can now see A, B, and C columns at the top, with the Output column at the bottom. Mods that need to be fixed manually are marked with yellow color at the top columns
  • In the Output Column, find the Merge Column line – right-click it and see which column at the top correlates – the text should also be highlighted in yellow.
  • Click Select Lines from A (or any other column that correlates in your case) – the conflict should be now resolved
  • Click File > Safe at the top and then repeat this for every yellow line present
  • Once done, close down the window, which would then show you the Merge Finished window, click OK.

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About the author
Gabriel E. Hall
Gabriel E. Hall - Passionate computer expert

Gabriel E. Hall is an expert troubleshooter who has been working in the information technology industry for years.

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