Cefsharp: FrameLoadEnd sometimes throws "The underlying frame is no longer valid - please check the IsValid property before calling"

[GrabzIt]

• What version of the product are you using?
  65.0.0

• What architecture x86 or x64?
  x86

• On what operating system?
  Windows 2008 R2, Windows 2012

• Are you using WinForms, WPF or OffScreen?
  Offscreen

• What steps will reproduce the problem?
  This seems to happen intermittently and I am not sure exactly why. However it happened in version 63,0.0 as well and seems to be originating from the OnLoadEnd event in c++ so I don't think it is to do with the order methods etc is called by my code. The stacktrace of the error is shown below.

• What is the expected output? What do you see instead?

  Always successfully fire LoadEnd event

• Please provide any additional information below.

The underlying frame is no longer valid - please check the IsValid property before calling!
at CefSharp.Internals.CefFrameWrapper.ThrowIfFrameInvalid()
at CefSharp.Internals.CefFrameWrapper.get_Url()
at CefSharp.Internals.ClientAdapter.OnLoadEnd(ClientAdapter* , scoped_refptr* browser, scoped_refptr* frame, Int32 httpStatusCode)

[amaitland]

This seems to happen intermittently and I am not sure exactly why. However it happened in version 63,0.0 as well and seems to be originating from the OnLoadEnd event in c++ so I don't think it is to do with the order methods etc is called by my code. The stacktrace of the error is shown below.

Strange that this has never been a problem before, I wonder under what circumstance frame.IsValid is false.

Change merged into cefsharp/67 branch with https://github.com/cefsharp/CefSharp/commit/64aec8f5b3ce665698a8507f643a20d7c77672fc

Pretty sure this should be resolved.

[amaitland]

@GrabzIt If this is a show stopping bug for you then let me know and I can look at releasing a 65.0.1 bug fix release.

[GrabzIt]

Thanks for the fix :-D It's not a show stopper, but thanks for the offer of a new release!

[GrabzIt]

@amaitland actually we have just checked our logs and it seems to have happened quite a lot in the last 24 hours alone. It would be great if you could do a bug fix release of version 65 for this, if it is not too much trouble.

Thanks for all your help as always.

[amaitland]

Packages are building now see https://ci.appveyor.com/project/cefsharp/cefsharp/build/65.0.0-CI2735

Will give them a quick test and push them to Nuget.org hopefully later today.

[GrabzIt]

Awesome, thanks!

[amaitland]

Packages have been pushed, should appear shortly.