No Prediction Accuracy or Schedule Adherence reports available?

[wkulesza]

Got it running with my GTFS and GTFS-RT for testing.
Can display AVL reports on map and last-gps too.
Predictions are available instantly (up to 100% assignments), but:

• historical reports give: "No data for requested parameters. Hit back button to try other parameters."
• schedule adherence gives empty result.

When i checked the check_db script, it says database is running

Any hints on where to look for solution ?