I'm using unity 5.2.2, and cannot build my project to WebGL. I have 3 dlls in my project, all of which are built using .net 3.5 and below. (System.Drawing.dll, Newtonsoft.Json, and a custom version of Libnoise-unity)
Here is the error I'm getting:
Failed running C:\Program Files\Unity\Editor\Data\Tools/UnusedByteCodeStripper2/UnusedBytecodeStripper2.exe -out "D:\Documents\UnityProjects\WarWorldInfinity\Temp\StagingArea\Data\Managed\tempStrip" -l none -c link -x "C:\Program Files\Unity\Editor\Data\Tools\native_link.xml" -f "C:\Program Files\Unity\Editor\Data\il2cpp\LinkerDescriptors" -x "D:\Documents\UnityProjects\WarWorldInfinity/Temp/StagingArea/Data/methods_pointedto_by_uievents.xml" -d "D:\Documents\UnityProjects\WarWorldInfinity\Temp\StagingArea\Data\Managed" -a "D:\Documents\UnityProjects\WarWorldInfinity\Temp\StagingArea\Data\Managed\Assembly-CSharp.dll" -a "D:\Documents\UnityProjects\WarWorldInfinity\Temp\StagingArea\Data\Managed\UnityEngine.UI.dll"
stdout:
Fatal error in Mono CIL Linker
System.NullReferenceException: Object reference not set to an instance of an object
at UnusedBytecodeStripper2.ResolveFromPreserveAttribute.IsPreserveAttribute (Mono.Cecil.TypeReference arg) [0x00000] in :0
at UnusedBytecodeStripper2.ResolveFromPreserveAttribute.m__0 (Mono.Cecil.CustomAttribute c) [0x00000] in :0
at System.Linq.Enumerable.Any[CustomAttribute] (IEnumerable`1 source, System.Func`2 predicate) [0x00000] in :0
at UnusedBytecodeStripper2.ResolveFromPreserveAttribute.HasPreserveAttribute (ICustomAttributeProvider type) [0x00000] in :0
at System.Linq.Enumerable+c__Iterator1E`1[Mono.Cecil.PropertyDefinition].MoveNext () [0x00000] in :0
at UnusedBytecodeStripper2.ResolveStep.MarkProperties (Mono.Linker.LinkContext context, IEnumerable`1 properties) [0x00000] in :0
at UnusedBytecodeStripper2.ResolveFromPreserveAttribute.ProcessType (Mono.Cecil.TypeDefinition type, Mono.Linker.LinkContext context, Boolean assemblyHasPreserveAttribute) [0x00000] in :0
at UnusedBytecodeStripper2.ResolveFromPreserveAttribute.Process (Mono.Linker.LinkContext context) [0x00000] in :0
at Mono.Linker.Pipeline.Process (Mono.Linker.LinkContext context) [0x00000] in :0
at Mono.Linker.Driver.Run () [0x00000] in :0
at Mono.Linker.Driver.RunDriver (Mono.Linker.Driver driver) [0x00000] in :0
stderr:
UnityEngine.Debug:LogError(Object)
UnityEditorInternal.Runner:RunManagedProgram(String, String, String, CompilerOutputParserBase) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:66)
UnityEditorInternal.AssemblyStripper:RunAssemblyLinker(IEnumerable`1, String&, String&, String, String) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:192)
UnityEditorInternal.AssemblyStripper:StripAssembliesTo(String, String, String&, String&, String, String, IEnumerable`1) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:185)
UnityEditorInternal.AssemblyStripper:Strip(String, String, String&, String&, String, String, IEnumerable`1) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:136)
UnityEditorInternal.AssemblyStripper:Strip(String[], String[], String, String, String&, String&, String, String, IEnumerable`1) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:121)
UnityEditorInternal.IL2CPPBuilder:RunAssemblyStripper(IEnumerable, String, String[], String[], String) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:444)
UnityEditorInternal.IL2CPPBuilder:StripAssemblies(IEnumerable`1, String) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:417)
UnityEditorInternal.IL2CPPBuilder:Run() (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:291)
UnityEditorInternal.IL2CPPUtils:RunIl2Cpp(String, IIl2CppPlatformProvider, Action`1, RuntimeClassRegistry) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:218)
UnityEditor.PostprocessBuildPlayer:Postprocess(BuildTarget, String, String, String, Int32, Int32, String, String, BuildOptions, RuntimeClassRegistry)
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