Display "Defaults" has an invalid style plugin.

I have the same problem on my site. The calendar was working previously.

Exactly the same for me.

It sounds like you are trying to use views created in Calendar 7.2 in Calendar 7.3, which won't work. Please read the README.txt file and/or the release notes. The plugins and handlers in 7.3 have changed.

Thank you very much! - That worked for me!

I have this exact same problem. The README say to "revert" your views? How do you "revert" a view? I don'
t see any option to revert views. How do I revert the civi_events calendar view?

When I try to create a brand new view of format "calendar" I get Debug:

'calendar_plugin_style: Missing calendar row plugin'

in calendar_plugin_style->render() (line 205 of /var/www/drupal/sites/all/modules/calendar/includes/calendar_plugin_style.inc).

For the old calendar view that does work, Under Format - I see show calendar items, and can choose:
Calendar Items
Content
Fields

For all new views I create - I don't see anything but fields in the format show

the README does not give enough information for me to fix this problem.

I got the same problem. I'm trying to create a calendar view for civievents, but I always get the error: 'calendar_plugin_style: The calendar row plugin is required when using the calendar style but it is missing.'. Under Format > Show: the only choice I got is Fields, there is no Calendar Items, etc.

I tried using the default civicrm events calendar but I got the same error as they have, Error: Display calendar_1 refers to a plugin named 'calendar', but that plugin is not available.

Im using Drupal 7.0 and civicrm 4.0, Date 7.x-2.x, Calendar 7.x-3.x, Views 7.x-3.x and CTools 7.x-1.x all in dev. Please help me here.

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I cant even see the view edit functions, I think this may be a views issue but am unclear on how to perform and transmit a diagnostic report without letting someone into the CMS. I'd like to just be able to set parameters for it to check the event dates field.

New Calendar is still visiblethough, just not the view edit areas. Getting both messages:

Display "Defaults" has an invalid style plugin.

Unable to preview due to validation errors.

What is display 'Defaults' anyway?

Woo- Fixed it manually.

Ok here it is:
1) Disable the Calendar and iCal Modules
2) Go into you DB for under ctools_object_cache you will find your broken calendar despite the disable
3) Drop it, delete it, kill it with fire (leave your other views that work.
4) Re-enable the Calendar module and it will regenerate a clean version of the new calendar system

Until the next Calendar release that should fix your problems, if you're willing to dive into it. 100% success rate.

Same fault for me, comment #12 didn't fix mine, but cloning the default Calender view and editing it works fine....

Using the latest dev versions of Date and Calendar.

#12 by samichx FIXED mine! I pretty much had no Views UI on the default calendar, even after following the steps going from 7.2 to 7.3. The database delete process worked. I emptied my cache after deleting the database files just to be sure and then enabled my modules again. Went to views and the calendar worked perfectly. Thank you samichx!!!

#12 fixed mine! Thanks!! I've been pulling my hair out trying to get the calendar default view editable.

#12 did not fix it. I get Display "Defaults" has an invalid style plugin.
Unable to preview due to validation errors.
and cannot access the view no matter what.

#12 did not fix it. I get only the issue Title error when triyng to edit the view (latest dev version).

And Preview with contextual filters: message "Separate contextual filter values with a "/". For example, 40/12/10." is quite misleading.

What is the right date format to use ?

Fixed by :
DELETE FROM views_view WHERE name = 'calendar';
drush cc all
+ redo #12

"Needs work" means there is a patch here.

There is probably not much I can do. There are no easy ways for a module to force-delete a view, plus it wouldn't be safe to make assumptions about what views to delete, so the code can't do anything. That means you have to delete it yourself if there is a view you don't want.

Marking fixed because this is a support request and I've responded to it in the only way I can.

#12 worked for me.
Thanks a lot.

It worked for me but a bit simpeler way than #12
1) Disable the Calendar (calendar-7.x-3.4) and iCal Module
2) Use de-install procedure (admin/modules/uninstall)
3) Delete module using FTP
4) Upload calendar-7.x-3.2
5) Enable modules again

#23 It's worked easily for me.

#23 also worked for me Thanks for post.

#23 didn't work for me

#23 worked for me.
Thanks a lot.

I dont think this is a good solution... but reverting back to an older version
It would be best for the bug to be fixed so that it could function as expected
Thanks

Hi,
I think it may be easier: I have observed that in the view configuration, the "format" field was empty. Clicking on it, I could select format view "calendar" again and configure months, days, etc..
It was that simple.
Hope this helps you

Why is this problem still coming up so long after it was identified? Surely 7.3 should have been patched by now? Most of the suggested "fixes" - even the "easy" ones - are not stuff newbies would like to attempt!

I don't think this issue should be marked "closed" - it sure isn't closed for me! Validity of style plug in. Obligation of originators to fix bugs they introduce. "Work arounds" are NOT fixes.