Software Packages Not Displaying

Hello:

Virtualmin version 4.13.gpl GPL
CentOS Linux 6.6
Package updates All Virtualmin packages are up to date.

Just noticed that Webmin->Software Package Updates (Click “Installed”) returns “No packages available to be updated were found.” All my installed packages seem to be missing.

If I click on “Only New” it shows lots of packages, including installed ones, as it should.

Additionally, in Webmin->Software Packages when I click “Package Tree” it returns nothing - only a line with a folder icon and “All Packages”. Clicking on this does nothing. This should show a populated package tree.

Any ideas on why my software packages are not displaying?

Thanks,
Bill