Migrated PSE catalog from PC to Mac and External Drive is not recognized

I upgraded to PSE 10 on my PC.  My media files are on an external NAS share named Sahara/Public.  Everything looked good.  My goal was to keep the photos on the NAS, retire my PC and use my Mac going forward.  I then Installed PSE 10 on my Mac then used PSE 10 to Move the catalog from my PC to my Mac.  I can open PSE 10 on my Mac and see the thumbnail photos and meta data, tags etc, except all the photos are showing as offline.

When I right-click on a photo and select Show Properties, the folder location displays   [//Sahara/Public] /Shared Pictures/...

From the Properties dialog, I click the folder to Reveal in Finder then the Find Offline Drives pop-up appears showing  //Sahara/Public as Offline.  Action to Reconnect Drives is not allowed with "no drive detected" message below.  (However the drive is connected and visible in Finder)

After I go through the process to reconnect a file successfully, the Show Properties dialog then displays   Public/Shared Pictures/...

When I navigate the the photo in Finder and right click and select Get Info the following is displayed:

Where:  /Volumes/Public/Shared Pictures/picsbkup/My Pictures/Digital Camera/2006-09-02-1249-29

Server:  afp://Sahara._afpovertcp._tcp.local/Public/Shared Pictures/picsbkup/My Pictures/Digital Camera/2006-09-02-1249-29/DSCN0712.jpg

I have 50,000 photos and cannot reconnect them one at a time.

How can I correct my catalog so that it recognizes the existing NAS Share and the location of the photos?  I no longer have access to the PC.