Can edit and delete calendar events in Thunderbird, but can't post new ones that sync

[Jay Katz - Colorado Grants]

I tried searching for an answer to this one, but didn't find it.
So...grateful if anyone can figure this out:

I have Lightning set up to sync my Google calendar with Thunderbird
2.0. I have both the Lightning and bidirectional add-ons installed.

Thunderbird pulls up the calendar from Google just fine.

1) THE GOOD: If I edit or delete an event created in Google Calendar
in Thunderbird, the information syncs just fine.
2) THE BAD: If I create a new event in Thunderbird/Lightning, the new
event DOES NOT sync with Google calender. I can't figure this one out.

Any ideas would be much, much appreciated. Thank you!

Jay