configuration management fails to run after first execution of script

Good afternoon! 

I'm hoping someone can help me with this issue. 

I select all the nodes that I want to run a script on, execute the script, get the results back. Everything works fine.

Then I go back to the config mgmt screen to select more nodes, I select my nodes, execute the script and I get a box that pops up that says "Execute Script" and the gray bar keeps moving, but it never executes the script on anything. Its like it is locked up and won't process any scripts anymore. 

We had to reboot the server last time in order to be able to execute scripts again. Instead of having to reboot the server after every run, I wanted to find out if there was a solution to this issue.

THanks!!