Astrology software Sky Calendar - FAQ:

Received error message “Error reading PrintDialog1” when you try to insert a note for person from database.

It occurs when you have not any printer installed. Please install some printer (however you may not have any). Windows´ Control panel - Printers - Add printer... then choose some printer from the list and install it.

The time of first tattva is few minutes shifted against sunrise.

It is O.K. First tattva moment is right in time of Sun being physically present on horizon (but the Sun is visible few moments sooner due to atmospheric refraction).