I am trying to save an older scenario but keep getting an error message "Error Saving Scenario". That is it, no details at all, what is the issue?
This will happen if the scenario was originally built prior to the 2.2 Release which became available in 2009. The old scenarios will have an original version of our where clause. Given the changes to how scenarios are now saved in the 2.7 release those scenarios can no longer be saved until they are updated to the new where clause.
To update to the new where clause, first make sure you are running the current version of DemandTools. When you load the scenario with that version you will see a "Use New Where Clause" button in the lower right. Click on that option, rebuild any conditions, and re-save the scenario.
Note: The button was available in all releases starting in version 2.2, but accidentally was hidden behind the new "Filter Match Results" option. The issue was resolved in version 2.70.28.