Date Lookup control does not appear in Report Parameters after Time Out Warning

Problem(Abstract)

After the user receives a Time out warning, the Date Lookup control does not display.

Symptom

The Date Lookup Control does not display in the Report Parameters

Resolving the problem

There are a couple fixes for this..
1. Log out & log back in..
2. Bring up a different lookup in the report parameters page.. After this, the date lookup will display.

IBM Support