Hi,
Thanks for using the Events Calendar.
Here on the pre-sales forum, I’m afraid we do not provide technical support. I would ask that you take any technical support questions across to our wordpress.org forum – our staff scan it periodically and other community members may also be able to help out.
The Events Calendar
Having said that you can add the following to your Theme’s functions.php to get the gCal Links to open in a new window:
https://gist.github.com/jesseeproductions/9d1c1cb91fc636c8b7a3
iCal links should just open a save as box and do not need to open in a new windows.
If you have any further comments or questions please post in the WordPress.org Forum.
Thanks again!