The installation link for the Salesforce Package can be found here.
While setting up a location's Availability, you could uncheck the All day option and set it up to start from 00:00 and end at 00:00 hrs. This implied that its Time window duration (mins) duration would be is 0. Setting up the availability of a location this way would result in booking failures. We have resolved this issue so that the system now does not let you save such availability for a location. Rather, it displays an appropriate message. A new message key has been added to make this modification which is:
There seems to be a problem with the selected location, please contact support or select another location.