Can't change calendar colours (v5)

I’ve just updated from v4 to v5 and like the new calendar colours. However, when I try to change the colour of a calendar (right click, properties, select colour, OK) it changes for about one second and then reverts to original colour. Any idea why this is happening?

Hello,
thank you for reporting this - we will try to fix it as soon as possible.

I have this problem, too. Just to clarify, here are some more symptoms:
-I use Google Calendar.
-I get NullReferenceExceptions when I change any calendar’s colour.
-My own and other people’s Google calendars’ colours can be changed in em Client.
-If I change the colour of an external iCal subscription calendar or Google Calendar weather calendar, I get the described problem.

It will be fixed in the next update.