There is a Template:Toolkit variable scoping issue with the date-picker JavaScript configuration in the guided reports and dictionary templates.
Created attachment 4671 [details] [review] Proposed fix Template variable scope errors. The change to dictionary.tt can be tested by creating a dictionary definition based on a date-type table column (date of birth, registration date, etc). The date-picker widgets for "start of date range" and "end of date range" should work correctly. The change to guided_reports_start.tt cannot be tested as far as I know because of bug 6607.
Template-only change, easy to read, marking as Passed QA
Pushed, please test