HTC Sensation — Calendar (CalDAV) Sync for Android connection string is wrong

I have HTC sense Salsa hardware and I have customise Andriod OS and on it, I have calSync App
that I want to syncronise with my Google Calender through type Caldev

below URL I got from hypermatix

https://www.google.com/calendar/dav/calendar_id/events

gives error: Error:CallingMethod:Com.icalparse Calendar Interaction$3.run Errors occurred during caldev connection initialization
I need Correct URL connection string

"Android is Updating, Optimizing Applications"

I heard about this problem from many of them and also I suffer from it. After installing ICS operating system, whenever am restarts my phone it’s updated all the time!!!!!!
Thanks
SONDAHA