FITC crashes whenever I attempt to compile something

[fm360]

Every time I try to compile a moveset mod I made, I get this error:

Unhandled Exception: System.InvalidOperationException: Sequence contains no matching element
at System.Linq.Enumerable.Single[TSource](IEnumerable1 source, Func2 predicate)
at SALT.Scripting.AnimCMD.ACMDCompiler.CompileSingleCommand(String line)
at SALT.Scripting.AnimCMD.ACMDCompiler.CompileCommands(String[] lines)
at SALT.Scripting.AnimCMD.ACMDCompiler.Compile(String input)
at SALT.Scripting.AnimCMD.ACMDCompiler.CompileFile(String filepath)
at FitCompiler.Program.compile_acmd(String mlist, String output)
at FitCompiler.Program.Main(String[] args)