Can't create new Google calendar, 'Next' greyed out

[Pete Sirois]

Thunderbird 38.0.1

Lightning 4.0.0.1

Provider for Google Calendar  1.0.4

Win 8.1 Pro

Updated Thunderbird from 31.x to 38.0.1

Thunderbird update process disabled old version of LIghtning (3.3.3) and updated to latest (4.0.0.1)

Installed Provider for Google Calendar 1.0.4 add-on

Restarted Thunderbird

In Calendar pane right-click, New Calendar, Create a New Calendar:On the network, Next

Select Google Calendar

Result: "Next" is greyed out.  Can't create a Google Calendar.

Any help?  Error log has this:

[John Hamilton]

Same problem here. VERY frustrating!

After updating to Thunderbird 38.0.1 and Lightning 4.0.0.1, my Google calendar vanished/disappeared.  Trying to add it back again fails with the same greyed out 'Next' box.  Can't add it with CalDAV either - when box should pop up asking for log-in details, nothing happens, and if you click 'Next' again, it says it has added it, but it can't sync as not connected to my Google account.

Please someone, help!

[John Hamilton]

I found the solution!

Uninstall Provider For Google, and re-install.

[Daniel K.]

Hi,

had the same issue with Google Provider 1.0.x. There seems to be some trouble with 'Exchange EWS Provider' (calendar connection Exchange Servers) that was also installed as add-on.

1. Deactivate EWS provider
2. restart
3. Google Calender works now as it should ('next' is not grey anymore)
4. Re-Activate EWS provider
5. restart

Everything is fine (at least for my installation).

Best
Daniel