Aman, we have made progress. After following your advice, the build of XMPToolkitSDK64 result in ALL_BUILD being forced to VS2010 and XMPCore and XMPFiles are left as VS2012. I do not know what ALL_BUILD is used for but it seems tht I will only be using XMPCore and XMPFiles.
Best Regards and many thanks,
Bill Scully