Automation Open error - "ClassFact​ory cannot supply requested class" (-21472212​31)

Question

I am trying to use a third party COM object.  I have been provided with a comobject.DLL file and I have registered the object.
I have been able to use the COM object with no problems using a VB script.
Now, I need to be able to use the COM object from LabVIEW.
I created an Automation Open function ( Functions > Connectivity > ActiveX > Automation Open ).
I then selected my ActiveX class from the Automation Open menu and created a Refnum.
Unfortunately, when I execute the VI, I get the following error:
"ClassFactory cannot supply requested class in activextest.vi"
I am using LabView 8.2 on Windows XP.
NOTE: I am able to create an InvokeNode function and see the available methods for this COM object.
Any help is greatly appreciated.
Thank you in advance.

Answer 1

If that fails to work, then it was not properly made or completed. It should boot the computer to a screen similar to that of a Recovery HD. Without a Mavericks installer of your own there is no way to restore Mavericks because it can no longer be downloaded. You have the option of Mountain Lion to purchase or Yosemite which is free. You might try fixing your Yosemite system.
Install or Reinstall OS X from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Erase the hard drive:
  1. Select Disk Utility from the main menu and click on the Continue button.
  2. After DU loads select your startup volume (usually Macintosh HD) from the
      left side list. Click on the Erase tab in the DU main window.
  3. Set the format type to Mac OS Extended (Journaled.) Optionally, click on
      the Security button and set the Zero Data option to one-pass. Click on
      the Erase button and wait until the process has completed.
  4. Quit DU and return to the main menu.
Reinstall OS X: Select Reinstall OS X and click on the Install button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible
           because it is three times faster than wireless.