Is there a solution in this error?.
We just migrated to O365 and when we install Nintex Form so we can fix the form for the Calendar App it shows this error.
right now there is no real solution to this. You can do a workaround by having a custom list, add the regular fields to it and create a calendar view but of course if you open it in Outlook it won't recognize the custom list as a calendar.
This really is annoying, I struggled with this too.
There are a couple requests on user voice so I suggest you put your votes on those stories too:
Support Event Content Type – Customer Feedback for Nintex
Enable forms for Events and all other content types – Customer Feedback for Nintex
Thanks for the suggestion Enrico.
could you create a new Content Type that is based on the default Event CT? I have not tried this but it might fool Nintex
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