When trying to add The Mod Configuration Menu, the install fails when trying to run the external installer

[flan7]

I receive this message in the console:

[2020-08-24 15:48:37.445 W] WARNING: The extension of this file did not match the expected extensions for this format! You may want to inform the mod author.
wine: Read access denied for device L"\\??\\Z:\\", FS volume label and serial are not available.
wine: Read access denied for device L"\\??\\Z:\\", FS volume label and serial are not available.
wine: Unhandled page fault on read access to 0000000000000068 at address 000000007AC2EEB1 (thread 0578), starting debugger...
[2020-08-24 15:48:44.028 E] QPixmap::fromWinHICON(), failed to GetIconInfo() (Invalid cursor handle.)
[2020-08-24 15:48:44.057 E] QPixmap::fromWinHICON(), failed to GetIconInfo() (Invalid cursor handle.)
[2020-08-24 15:48:44.091 E] QPixmap::fromWinHICON(), failed to GetIconInfo() (Invalid cursor handle.)
[2020-08-24 15:48:45.116 E] QPixmap::fromWinHICON(), failed to GetIconInfo() (Invalid cursor handle.)
[2020-08-24 15:48:45.149 E] QPixmap::fromWinHICON(), failed to GetIconInfo() (Invalid cursor handle.)
[2020-08-24 15:48:45.183 E] QPixmap::fromWinHICON(), failed to GetIconInfo() (Invalid cursor handle.)

It pops up "could not compile script, errors found", then another pop up containing "Error code 3221225477".

This also happens when installing alternate repairing, another mod using the same type of installer

[Computious]

I am having this same problem. Only for Fallout Character Overhaul instead. If you know how, manually installing the mod would be your best bet. It usually isn't that hard. Extract the fomod and figure out which files are optional that you need. discard the rest. then zip the data level files. you can merge all the data(and textures, and meshes) files into one big data folder if you want. The installer you can't get running likely would do the same. Then zip any and all esm's, esp's and the like. now you just have to add them all individually.

[SFMason]

I'm getting the same issue on Skyrim, for mods SkyUI and A Quality World Map. I can't confirm this, but it looks like it's any mod that includes a script.cs file in the FOMOD installer. This would imply that the wine prefix is missing a .NET component to compile and run the script. If it helps, both scripts are including the same namespaces:

using System.Text;
using System.Collections.Generic;
using System.IO;
using System.Text.RegularExpressions;
using System.Windows.Forms;
using System.ComponentModel;
using System.Drawing;
using fomm.Scripting;
using System.Globalization;
using System;

Unfortunately I can't expand the 'details' dropdown on the error message for more specific info.

[SFMason]

I'm getting the same issue on Skyrim, for mods SkyUI and A Quality World Map. I can't confirm this, but it looks like it's any mod that includes a script.cs file in the FOMOD installer. This would imply that the wine prefix is missing a .NET component to compile and run the script. If it helps, both scripts are including the same namespaces:

using System.Text;
using System.Collections.Generic;
using System.IO;
using System.Text.RegularExpressions;
using System.Windows.Forms;
using System.ComponentModel;
using System.Drawing;
using fomm.Scripting;
using System.Globalization;
using System;

Unfortunately I can't expand the 'details' dropdown on the error message for more specific info.

Looks like this might be at least part of the problem. I installed dotnet48 with protontricks, and it did allow me to run the installer (specifically for mod https://www.nexusmods.com/skyrim/mods/4929). However, the installer still failed when clicking 'Install' so there must be something else missing.

[fighuass]

Had this problem with SkyUI, but I got it to work by making a SkyUI folder where MO2 stores mods, and then simply copy pasting the .esp and .bsa. MO2 says it can't get it to work, but somehow it does.

[deane-c64]

Technically, at Best Fomod install is bad. at worse is whats happening here. Fomod workaround is simply to install manually inside Mod folder!

[TheDrifter363]

Wanted to update this post. Using the latest installer as of this date, the mod configuration menu FOMOD refuses to install. It crashes. I'm not sure if it's a dotnet issue, since the FOMOD says it's written in C#.

[2022-01-14 20:33:40.866 W] The extension of this file did not match the expected extensions for this format. [2022-01-14 20:33:43.693 W] C# [0]: Metadata file `System.Runtime.dll' could not be found

[17hoehbr]

Having the same issue with installing Project Nevada in Fallout New Vegas. Trying to install dotnet48 through protontricks also failed with the error message "Installation failed with error code: (0x80070643)". I think the issue is because it's a 64 bit prefix but I'm hesitant to change it to a 32 bit prefix because I expect that would cause performance issues.

[17hoehbr]

I believe I successfully installed dotnet48 using some of the instructions on this reddit post, however I am still getting the same error that TheDrifter363 described.