To download the new Pro version, enter your Paypal Invoice ID# and click Download button . You can Download only once.

Note: Invoice number is found in your Paypal Receipt. If you dont have a PayPal account, Invoice ID will be in the email receipt from PayPal. Do not enter the Transaction number. Look for "Invoice ID:" xxxxxxxxxxx in your PayPal receipt and in your PayPal Transaction history.

If you do not have an Invoice ID, send email to with a proof of purchase - paypal receipt or email.

Download, Save and extract the .zip file into any folder and run "Calendar Sync Pro.exe". Also Download Registry Fix as mentioned here.