Could not load file or assembly System.Drawing

System: Mac OS X 10.8.2 Mountain Lion

A certain project I'm working on requires me to link Unity to Mathematica. It seems like this would likely work with Windows, but a lot of other things rely on Xcode, so I'm unfortunately stuck dealing with the crap hole known as Apple technology.

Here is the error:

 Unhandled Exception:
 Mono.CSharp.InternalErrorException:
 Assets/Popper/Mathematica/LMathematica.cs(14,12):
 LMathematica.LMathematica() ---> System.IO.FileNotFoundException: Could not load file or assembly 'System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. File name: 'System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' at (wrapper managed-to-native) System.Reflection.MonoMethodInfo:get_method_info(intptr,System.Reflection.MonoMethodInfo&) at System.Reflection.MonoMethodInfo.GetMethodInfo(IntPtr handle) [0x00000] in :0 at System.Reflection.MonoMethodInfo.GetDeclaringType(IntPtr handle) [0x00000] in :0 at System.Reflection.MonoMethod.get_DeclaringType() [0x00000] in :0 at Mono.CSharp.TypeManager.IsGenericMethodDefinition(System.Reflection.MethodBase mb) [0x00000] in :0 at Mono.CSharp.TypeManager.GetMethodName(System.Reflection.MethodInfo m) [0x00000] in :0 at Mono.CSharp.MemberCache.AddMembers(MemberTypes mt, BindingFlags bf, IMemberContainer container) [0x00000] in :0 at Mono.CSharp.MemberCache.AddMembers(MemberTypes mt, IMemberContainer container) [0x00000] in :0 at Mono.CSharp.MemberCache.AddMembers(IMemberContainer container) [0x00000] in :0 at Mono.CSharp.MemberCache..ctor(IMemberContainer container) [0x00000] in :0 at Mono.CSharp.TypeHandle..ctor(System.Type type) [0x00000] in :0 at Mono.CSharp.TypeHandle.GetTypeHandle(System.Type t) [0x00000] in :0 at Mono.CSharp.TypeHandle.GetMemberCache(System.Type t) [0x00000] in :0 at Mono.CSharp.TypeManager.MemberLookup_FindMembers(System.Type t, MemberTypes mt, BindingFlags bf, System.String name, System.Boolean& used_cache) [0x00000] in :0 at Mono.CSharp.TypeManager.RealMemberLookup(System.Type invocation_type, System.Type qualifier_type, System.Type queried_type, MemberTypes mt, BindingFlags original_bf, System.String name, IList almost_match) [0x00000] in :0 at Mono.CSharp.TypeManager.MemberLookup(System.Type invocation_type, System.Type qualifier_type, System.Type queried_type, MemberTypes mt, BindingFlags original_bf, System.String name, IList almost_match) [0x00000] in :0 at Mono.CSharp.Expression.MemberLookup(Mono.CSharp.CompilerContext ctx, System.Type container_type, System.Type qualifier_type, System.Type queried_type, System.String name, MemberTypes mt, BindingFlags bf, Location loc) [0x00000] in :0    at Mono.CSharp.Expression.MemberLookup(Mono.CSharp.CompilerContext ctx, System.Type container_type, System.Type qualifier_type, System.Type queried_type, System.String name, Location loc) [0x00000] in :0 at Mono.CSharp.MemberAccess.DoResolve(Mono.CSharp.ResolveContext ec, Mono.CSharp.Expression right_side) [0x00000] in :0 at Mono.CSharp.MemberAccess.DoResolve(Mono.CSharp.ResolveContext ec) [0x00000] in :0 at Mono.CSharp.Expression.Resolve(Mono.CSharp.ResolveContext ec, ResolveFlags flags) [0x00000] in :0 at Mono.CSharp.Invocation.DoResolve(Mono.CSharp.ResolveContext ec) [0x00000] in :0 at Mono.CSharp.Expression.Resolve(Mono.CSharp.ResolveContext ec, ResolveFlags flags) [0x00000] in :0 at Mono.CSharp.Expression.Resolve(Mono.CSharp.ResolveContext ec) [0x00000] in :0 at Mono.CSharp.ExpressionStatement.ResolveStatement(Mono.CSharp.BlockContext ec) [0x00000] in :0 at Mono.CSharp.StatementExpression.Resolve(Mono.CSharp.BlockContext ec) [0x00000] in :0 at Mono.CSharp.Block.Resolve(Mono.CSharp.BlockContext ec) [0x00000] in :0 at Mono.CSharp.ToplevelBlock.Resolve(Mono.CSharp.FlowBranching parent, Mono.CSharp.BlockContext rc, Mono.CSharp.ParametersCompiled ip, IMethodData md) [0x00000] in :0    --- End of inner exception stack trace ---   at Mono.CSharp.TypeContainer.EmitConstructors() [0x00000] in :0 at Mono.CSharp.TypeContainer.EmitType() [0x00000] in :0 at Mono.CSharp.RootContext.EmitCode() [0x00000] in :0 at Mono.CSharp.Driver.Compile() [0x00000] in :0 at Mono.CSharp.Driver.Main(System.String[] args) [0x00000] in :0

Here is the relevant code from LMathematica:

 public LMathematica() {
     if(Application.platform == RuntimePlatform.OSXEditor ||
             Application.platform == RuntimePlatform.OSXPlayer) {
         _kl = MathLinkFactory.CreateKernelLink("-linkmode launch -linkname '\"/Applications/Mathematica.app/Contents/MacOS/MathKernel\" -mathlink'");
         } else if(Application.platform == RuntimePlatform.WindowsEditor ||
             Application.platform == RuntimePlatform.WindowsPlayer) {
         _kl = MathLinkFactory.CreateKernelLink();
         } else {
             throw new Exception("We are not supposed to use local mathematica, or it is not supported on this platform");
         }
     // discard the initilal response kernel will send when launched
     _kl.WaitAndDiscardAnswer();
 }

How do I solve this...I'm pretty stuck. I looked around but the solutions are for Windows (like where they just grab the DLL from the program they're integrating. I checked the path and it's correct, so it must be calling System.Drawing within the MathLinkFactory stuff (http://reference.wolfram.com/mathematica/NETLink/ref/net/Wolfram.NETLink.html). No idea how I'd correct it if that is the problem though.