PHP Errors

I just installed a Wordpress Multisite on GoDaddy yesterday. There is only the main site so far. I just tried to create my first snapshot and it succeeded but it also posted the following errors when the snapshot was made:

Warning: array_keys() [function.array-keys]: The first argument should be an array in /home/content/25/9093325/html/wp-content/plugins/snapshot/snapshot.php on line 674

Warning: array_intersect() [function.array-intersect]: Argument #1 is not an array in /home/content/25/9093325/html/wp-content/plugins/snapshot/snapshot.php on line 675

When I visit the All Snapshots screen, it shows these additional errors:

Warning: ksort() expects parameter 1 to be array, null given in /home/content/25/9093325/html/wp-content/plugins/snapshot/snapshot.php on line 2079

Warning: array_diff() [function.array-diff]: Argument #1 is not an array in /home/content/25/9093325/html/wp-content/plugins/snapshot/snapshot.php on line 2083