LeapMotion SEHException

If for some reason when you try and run your code and you get a PINVOKE exception (like the one below), then most likely you don’t have the LeapMotion binaries in your Debug (or Release) folders.

System.TypeInitializationException was unhandled
HResult=-2146233036
Message=The type initializer for 'Leap.LeapPINVOKE' threw an exception.
Source=LeapCSharp.NET4.0
TypeName=Leap.LeapPINVOKE
StackTrace:
at Leap.LeapPINVOKE.new_Listener()
at Leap.Listener..ctor()
at HelloLeap.MyListener..ctor()
at HelloLeap.Program.Main(String[] args) in c:\Users\amit.bahree\Documents\Visual Studio 2013\Projects\HelloLeap\HelloLeap\Program.cs:line 14
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException: System.TypeInitializationException
HResult=-2146233036
Message=The type initializer for 'SWIGExceptionHelper' threw an exception.
Source=LeapCSharp.NET4.0
TypeName=SWIGExceptionHelper
StackTrace:
at Leap.LeapPINVOKE.SWIGExceptionHelper..ctor()
at Leap.LeapPINVOKE..cctor()
InnerException: System.DllNotFoundException
HResult=-2146233052
Message=Unable to load DLL 'LeapCSharp': The specified module could not be found. (Exception from HRESULT: 0x8007007E)
Source=LeapCSharp.NET4.0
TypeName=""
StackTrace:
at Leap.LeapPINVOKE.SWIGExceptionHelper.SWIGRegisterExceptionCallbacks_Leap(ExceptionDelegate applicationDelegate, ExceptionDelegate arithmeticDelegate, ExceptionDelegate divideByZeroDelegate, ExceptionDelegate indexOutOfRangeDelegate, ExceptionDelegate invalidCastDelegate, ExceptionDelegate invalidOperationDelegate, ExceptionDelegate ioDelegate, ExceptionDelegate nullReferenceDelegate, ExceptionDelegate outOfMemoryDelegate, ExceptionDelegate overflowDelegate, ExceptionDelegate systemExceptionDelegate)
at Leap.LeapPINVOKE.SWIGExceptionHelper..cctor()

On the other hand if you get a SEHException from LeapMotion (something like the one below) then the issue is either you don’t have the right version of the assemblies (e.g. you are compiling a x64 version, but have the x32 binaries, or vice-versa).

System.Runtime.InteropServices.SEHException occurred
HResult=-2147467259
Message=External component has thrown an exception.
Source=Your.Some.Assembly
ErrorCode=-2147467259
StackTrace:
at Leap.LeapPINVOKE.Controller_EnableGesture__SWIG_1(HandleRef jarg1, Int32 jarg2)
at Somewhere.In.Your.Code bin
at Some.Assembly in d:\Data\src\SomeCode\YourFile.cs:line 23
InnerException:

The solution is simple in both cases to copy the binaries (which can be found in LeapSDK\lib) to the Debug and Release folders.

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Amit Bahree

This blog is my personal blog and while it does reflect my experiences in my professional life, this is just my thoughts. Most of the entries are technical though sometimes they can vary from the wacky to even political – however that is quite rare. Quite often, I have been asked what’s up with the “gibberish” and the funny title of the blog? Some people even going the extra step to say that, this is a virus that infected their system (ahem) well. [:D] It actually is quite simple, and if you have still not figured out then check out this link – whats in a name?

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