Unable to Add Custom Object to Library Group??

I recently upgraded computer and reinstalled Livecycle on my new computer. On the new computer, in Livecycle, when trying to add a custom object to the Object Library, I get the following message box:

"Unable to add object 'name' to library group."

I've checked and made sure that under Group Properties, all of the "Allow objects..." items are checked. The location of the libraries are in my C:\Program Files (x86)\Adobe\Acrobat 10.0\Designer 9.0\EN\Objects\ folder. Any idea what's going on? This is going to be a huge setback for me! I have to update my custom objects very often.

Thanks in advance.