TaskDialog Specified Cast not Valid

[dave.wolfe]

As the other mentioned in the comments sections of the article below, I am getting a specified cast is invalid on the line td.Show(). Does anyone have any ides?  I've tried the blank method, and passing in the main window handle with no success.

http://adndevblog.typepad.com/autocad/2012/07/taskdialog-with-progress-bar.html

[hgasty1001]

Hi,

Try passing an owner argument to the call function, like this: td.Show(Application.MainWindow.Handle)

Gaston Nunez

[dave.wolfe]

I tried that.

[Balaji_Ram]

Sorry for the delay.

It appears to be an API problem on 64 bit systems. We have brought this to the notice of the engineering team and they will prioritize this request.