TModLoader Build Error (Cannot find MCS)

[QubeTown]

Hey Everyone.

I wanted to build my first mod (The only thing in the mod was wings) and It came up with the error message:

Error running mcs: Cannot find the specified file
at Mono.CSharp.CSharpCodeCompiler.CompileFromFileBatch (System.CodeDom.Compiler.CompilerParameters options, System.String[] fileNames) [0x00000] in <filename unknown>:0
at Mono.CSharp.CSharpCodeCompiler.CompileAssemblyFromFileBatch (System.CodeDom.Compiler.CompilerParameters options, System.String[] fileNames) [0x00000] in <filename unknown>:0
at System.CodeDom.Compiler.CodeDomProvider.CompileAssemblyFromFile (System.CodeDom.Compiler.CompilerParameters options, System.String[] fileNames) [0x00000] in <filename unknown>:0
at Terraria.ModLoader.ModCompile.CompileMod (Terraria.ModLoader.BuildingMod mod, System.Collections.Generic.List`1 refMods, Boolean forWindows, System.Byte[]& dll, System.Byte[]& pdb) [0x00000] in <filename unknown>:0
at Terraria.ModLoader.ModCompile.Build (Terraria.ModLoader.BuildingMod mod, IBuildStatus status) [0x00000] in <filename unknown>:0
at Terraria.ModLoader.ModCompile.Build (System.String modFolder, IBuildStatus status) [0x00000] in <filename unknown>:0
at Terraria.ModLoader.ModLoader+<>c.<BuildMod>b__41_0 (System.Object _) [0x00000] in <filename unknown>:0

Basically, I want to know what I did wrong. I use Linux if that matters.

Thanks, Creeper8789.