If your calendar app crashes when setting the color for a specific event, it's a bug of your calendar app (and not DAVdroid). This will only happen when event colors are enabled in DAVdroid account settings.
We have noticed that the following calendar apps may crash when an event color is assigned:
- stock calendar / AOSP calendar
- Google Calendar (bug report / discussion)
- Samsung S Planner
- Etar (bug report)
Setting event colors has successfully been tested with
If you're experiencing this problem, you may either
- use a calendar app that supports setting event colors (see above), or
- disable event colors for the affected DAVdroid account and force synchronization.