Need help solving error when running GenerateProjectFiles.bat

Oezaxs
Sat, 21 Oct 2017 19:48:32 +0000
Multiplayer & Networking

Hi all!

I’m currently trying to build UE4 from source for a multiplayer project that I’m helping with. The only issue is that I can’t get past GenerateProjectFiles. Every time I run the .bat file I get the same error:

Setting up Unreal Engine 4 project files...
CSC : error CS0009: Metadata file 'C:\Program Files (x86)\Reference Assemblies\
Microsoft\Framework\.NETFramework\v4.5\System.Windows.Forms.dll' could not be o
pened -- An attempt was made to move the file pointer before the beginning of t
he file. [C:\Users\Brian's\Desktop\UE4\UnrealEngine-release\Engine\Source\Progr
ams\UnrealBuildTool\UnrealBuildTool.csproj]

GenerateProjectFiles ERROR: UnrealBuildTool failed to compile.

Press any key to continue . . .

I’ve looked everywhere online but I can’t seem to find a solution. If anyone could help me figure out how to fix this it would be greatly appreciated.

Additional Details:
So far I’ve tried a couple of solutions to fix the error but none of the following have worked so far.

Uninstall and reinstalling .Net 4.5

Turning off antivirus when running the .bat files

Deleting the folder and re-downloading the source

Downloading and extracting source from .zip and using that folder

Running all bat files as administrator

Made sure the specified file does exist (It does and it’s the same path specified in the error)

Re-installed VS 2017 making sure all additional packages involving c++ are installed

None of the above has worked for me so if anyone knows another fix that works it would be a lifesaver. Thank you for any and all answers!

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