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?

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.