Interesting.. That is surprising. Did it occur on something specific? Or, was it just random? Just to be sure, you have gone through everything in the article below?
Also, please double check your System Specs to make sure they meet the requirements. Lastly, when you build a new Service, do you start with last week's script and go from there? Or, do you open a fresh script each week and begin building from there? It's possible to run into issues if you are using a script that has been carried over multiple times.
Let me know and we can go from there.