Starting with Firefox version 62 for Mac, Adobe Flash applets will be run in a more secure mode using process sandboxing. This prevents certain file downloads in FlexiTime.

To disable the Flash sandbox take the following steps:

1. Type about:config in to the address bar and press enter:
   
   
   
   
2. Click I accept the risk!
   
   
3. Search for dom.ipc.plugins.sandbox-level.flash in the search bar:
   
   
4. Double click on dom.ipc.plugins.sandbox-level.flash and change the integer value to 0:
   
   
   
   
5. Right click on the Firefox icon and quit the browser:
   
   
   
   
6. Re-open Firefox and log in to FlexiTime. You should now be able to download files as normal.