Unity3d 3.5 Build to flash error dump debug

Trying to build a Unity3d project in flash, getting error:

Not sure of flash's limitation, thinking it may be the threads.

Any insight on this would be much appreciated.

I am using UDP socket & Threads from mono.

Code compiles and runs in editor and desktop.

Things I am using:

 using System;
 using System.Collections.Generic;
 using System.Threading;
 using System.Net;
 using System.Net.Sockets;
 using UnityEngine;


 Failed to convert type GameController: System.InvalidOperationException: Expecting a type reference for string[]!
   at cil2as.Extensions.AstTypeExtensions.MandatoryTypeReference (ICSharpCode.NRefactory.CSharp.AstType type) [0x00000] in <filename unknown>:0 
   at cil2as.Decompiler.Transforms.ImplementDeserializationSupport.ReadCollectionInvocation (ICSharpCode.NRefactory.CSharp.AstType elementType, ICSharpCode.NRefactory.CSharp.IdentifierExpression readerRef, System.String collectionType) [0x00000] in <filename unknown>:0 
   at cil2as.Decompiler.Transforms.ImplementDeserializationSupport.ReadListInvocation (ICSharpCode.NRefactory.CSharp.AstType listType, ICSharpCode.NRefactory.CSharp.IdentifierExpression readerRef) [0x00000] in <filename unknown>:0 
   at cil2as.Decompiler.Transforms.ImplementDeserializationSupport.AddReadImplementationFor (ICSharpCode.NRefactory.CSharp.FieldDeclaration field, ICSharpCode.NRefactory.CSharp.BlockStatement methodBody) [0x00000] in <filename unknown>:0 
   at cil2as.Decompiler.Transforms.ImplementDeserializationSupport.DeserializeImplementation () [0x00000] in <filename unknown>:0 
   at cil2as.Decompiler.Transforms.ImplementDeserializationSupport.VisitTypeDeclaration (ICSharpCode.NRefactory.CSharp.TypeDeclaration typeDeclaration, System.Object data) [0x00000] in <filename unknown>:0 
   at ICSharpCode.NRefactory.CSharp.TypeDeclaration.AcceptVisitor[Object,Object] (IAstVisitor`2 visitor, System.Object data) [0x00000] in <filename unknown>:0 
   at ICSharpCode.NRefactory.CSharp.DepthFirstAstVisitor`2[System.Object,System.Object].VisitChildren (ICSharpCode.NRefactory.CSharp.AstNode node, System.Object data) [0x00000] in <filename unknown>:0 
   at ICSharpCode.NRefactory.CSharp.DepthFirstAstVisitor`2[System.Object,System.Object].VisitNamespaceDeclaration (ICSharpCode.NRefactory.CSharp.NamespaceDeclaration namespaceDeclaration, System.Object data) [0x00000] in <filename unknown>:0 
   at ICSharpCode.NRefactory.CSharp.NamespaceDeclaration.AcceptVisitor[Object,Object] (IAstVisitor`2 visitor, System.Object data) [0x00000] in <filename unknown>:0 
   at ICSharpCode.NRefactory.CSharp.DepthFirstAstVisitor`2[System.Object,System.Object].VisitChildren (ICSharpCode.NRefactory.CSharp.AstNode node, System.Object data) [0x00000] in <filename unknown>:0 
   at ICSharpCode.NRefactory.CSharp.DepthFirstAstVisitor`2[System.Object,System.Object].VisitCompilationUnit (ICSharpCode.NRefactory.CSharp.CompilationUnit unit, System.Object data) [0x00000] in <filename unknown>:0 
   at ICSharpCode.NRefactory.CSharp.CompilationUnit.AcceptVisitor[Object,Object] (IAstVisitor`2 visitor, System.Object data) [0x00000] in <filename unknown>:0 
   at cil2as.Decompiler.Transforms.DepthFirstAstTransform.Run (ICSharpCode.NRefactory.CSharp.AstNode node) [0x00000] in <filename unknown>:0 
   at cil2as.Decompiler.ActionScriptAstBuilder.ApplyTransforms (ICSharpCode.NRefactory.CSharp.AstNode node, IEnumerable`1 pipeline) [0x00000] in <filename unknown>:0 
   at cil2as.Decompiler.ActionScriptAstBuilder.ApplyTransformationPipelineTo (ICSharpCode.NRefactory.CSharp.AstNode node) [0x00000] in <filename unknown>:0 
   at cil2as.Decompiler.ActionScriptAstBuilder.AstFor (Mono.Cecil.TypeDefinition type) [0x00000] in <filename unknown>:0 
   at cil2as.ActionScriptGenerator.AstFor (Mono.Cecil.TypeDefinition type) [0x00000] in <filename unknown>:0 
   at cil2as.ActionScriptGenerator.Decompile (Mono.Cecil.TypeDefinition type) [0x00000] in <filename unknown>:0 
   at cil2as.ActionScriptGenerator.GenerateActionScriptCodeFor (Mono.Cecil.TypeDefinition type) [0x00000] in <filename unknown>:0 
   at cil2as.AssemblyConverter.ConvertTypesToActionScript () [0x00000] in <filename unknown>:0