Kronos page is a black screen after logging in using Firefox

This is occurring as you can no longer see the Allow addin pop up for Adobe Flash Player which used to show up every time you would log into Kronos using Firefox.

The fix:

1. Right click anywhere in the black screen and choose to allow addin. 
2. When the pop up comes up, check the box to always allow and click okay

This should permanently allow the addin going forward.