I'm having issues with the CBSubs Mailer. This has been working for the longest time and has stopped generating messages into the queue. I attached an image of the settings for one of my mailers. These setting haven't changed in a year.
I did see that others have experienced the issue. The solution was to download the nightly build for CBSubs. I downloaded the nightly build from 7/25/2015 and installed. Mailer still not working.