In version v6.4.0 we introduced custom permissions, we tested this but it seems that some customers are facing issues with their current permission which blocks app initialisation. There is a simple solution:

1. Go to “Integrity checker” in system support section, then check option for checking duplicate permissions:
   

   

2. Use fix action to solve problems
   

   

3. Then uninstall and install The Scheduler again, check if app work - if it works great!
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4. If it doesn’t → then create a support request and send us fresh Jira logs ( How to gather application logs ), we will analyze it and figure out some new solutions (and update this page )