Hi,

I am experiencing a few issues with 2015 E.O WebBrowser with Windows 10.

Issue 1:

System.IO.EndOfStreamException

at System.IO.MemoryStream.InternalReadInt32()
at EO.Internal.kl.n()
at EO.Internal.kl.m()
at EO.WebBrowser.Frame.b(Object A_0)
at EO.Internal.ju.b[a](cs A_0, u2 A_1, Object A_2)
at EO.WebBrowser.BrowserObject.a[a](cs A_0, u2 A_1, Object A_2)
at EO.WebBrowser.FrameEventArgs..ctor(cs A_0, uw A_1)
at EO.WebBrowser.WebView.ad(cs A_0, uw A_1)
at EO.WebBrowser.WebView.<>c__DisplayClassc.<RunAction>b__b()
at EO.WebBrowser.WebView.a(Boolean A_0, d A_1)
at EO.Internal.cs.a(WebView A_0, cs A_1, Int32 A_2, IntPtr A_3, IntPtr A_4)
at EO.WebBrowser.WebView.c(IntPtr A_0, Int32 A_1, IntPtr A_2, IntPtr A_3, Boolean& A_4)
at EO.Internal.z.a(IntPtr A_0, Int32 A_1, IntPtr A_2, IntPtr A_3)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageA(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)


Issue 2:

A first chance exception of type 'System.EntryPointNotFoundException' occurred in EO.Base.dll

Additional information: Unable to find an entry point named 'GetMappedFileNameW' in DLL 'kernel32.dll'.

Your Dialog:

Exception:
System.Exception: Failed to resolve LoadLibrary.
at EO.Internal.jn.a.d()
at EO.Internal.jn.a.a(String[] A_0, String A_1, String A_2, String A_3, String A_4)
at EO.Internal.jn.a(String[] A_0, String A_1, String A_2, String A_3, String A_4)
at EO.Internal.jn.f.b()
at EO.Internal.jn.f.e()
at EO.Internal.jn.j()
at EO.Internal.jn.a(String[] A_0, String A_1, String A_2, String A_3, String A_4)
at EO.Internal.aah.a(String A_0, String A_1)
at EO.Internal.cs.a()
at EO.Internal.wp.j()

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Are there a few Windows 10 issues you are currently investigating?

If so please let me know when you release any fixes.

Regards.

15.2.10.0

Thank you for this response. I am currently working at a customer site so providing access is difficult at the moment.

If you are not experiencing issue #2 then it is possibly something wrong in my code and I am investigating that. I could send you more detailed information (screen shots of call stacks etc.) but cannot find an e-Mail address or way of attaching images to a reply.

Thanks again.

Hi,

We have found out the root problem for #2. The root problem is inside EO.Base.dll we have a timer to check the time it takes to intialize a specific portion of code. Usually this portion would finish within miniseconds. The timeout value is set to 5 seconds. So if that portion did not complete within 5 seconds, then our code will consider it has failed.

This piece of code has a number of try catch blocks. The code in the try block may raise exceptions (such as the EntryPointNotFoundException you observed), however that is properly handled by the catch block thus will not cause the code to fail. So under normal circumstance the code will run fine without any problem.

However if you run our component through debugger and have your debuggers exception setting set to break on every exception, then the debugger will break when an exception is raised in the try block. If you pause for more than 5 seconds (assuming that you are examining the exception information) and then continue execution, it would trigger the 5 seconds timeout condition thus causing the code to conclude that the initialization has failed. This is what happened in your case.

We are changing our code to eliminate the EntryPointNotFoundException in this block so the execution won't be paused even if your run it under a debugger with exception setting to break on every exception. In any case, at runtime this should not be problem.

Hope this clears it up for you. Please feel free to let us know if you have any more questions.

Thanks!

Please do not worry about the inconvenience. This is what we do. We are glad that we have found out that the root cause is not something more serious.

Thanks!