Report not recognizing Variables

[jahill938]

We recently upgraded from 11.1.7 to 11.2.4. We are having issues with some of the Drill through reports. When you click on the link to launch the Drill through report it just hangs, spinning endlessly. This doesn't happen with all the reports. When you run the drill through report separately, the ones that work have the parameters pop up to be filled in. When you run the drill through report separately, all you get is a blank screen. The work around we found that works, is to delete the variables and re-add them. We have hundreds of reports and to go through each one and redo all the variables will be very time consuming. All the reports work fine in 11.1.7

Has anyone else come across this issue? Does anyone have any ideas what is happening, how to fix it?