Warning: array keys() error with Multipost MU

I am trying to use MultiPost MU to build sites with similar content. I had it working fine on one server, moved it to a new server and I am now seeing the following error:
Warning: array_keys() [function.array-keys]: The first argument should be an array in /home/soundcleaning/soundclean.com/wp-content/plugins/multipost-mu/multipost-mu.php on line 399

When moving servers I did not export the db, I used the Tools > Export tool in WP. I installed Multipost and then created a new site in the Super Admin.

The new site shows up under the error, but no content is being duplicated… Any ideas? I am create a geo targeted site and this is the last thing I have to wrap to finish it offf.