Cannot make or edit email rule on 365

When changing or adding an email rule I get the following notification. What's wrong?

I tried noth Chrome and IE.

Client Information
------------------
User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.4 (KHTML, like Gecko) Chrome/22.0.1229.94 Safari/537.4
CPU Class: undefined
Platform: Win32
System Language: undefined
User Language: nl-NL
CookieEnabled: true
-----------------
Exception Details
-----------------
Date: Mon Oct 29 2012 13:29:20 GMT+0100 (West-Europa (standaardtijd))
Message: Script error.
Url: 
Line: 0


Call Stack
----------
Error
    at ErrorHandling.showUnhandledException (https://r3.res.outlook.com/ecp/14.16.224.5/Scripts/common.js:254:1205)
    at https://r3.res.outlook.com/ecp/14.16.224.5/Scripts/microsoftajax.js:5:307








Dump Event
----------
lineno = 0
filename = 
message = Script error.
clipboardData = undefined
cancelBubble = false
returnValue = true
srcElement = [object Window]
defaultPrevented = false
timeStamp = 1351513760691
cancelable = true
bubbles = false
eventPhase = 2
currentTarget = [object Window]
target = [object Window]
type = error
stopPropagation = function stopPropagation() { [native code] }
preventDefault = function preventDefault() { [native code] }
initEvent = function initEvent() { [native code] }
stopImmediatePropagation = function stopImmediatePropagation() { [native code] }
NONE = 0
CAPTURING_PHASE = 1
AT_TARGET = 2
BUBBLING_PHASE = 3
MOUSEDOWN = 1
MOUSEUP = 2
MOUSEOVER = 4
MOUSEOUT = 8
MOUSEMOVE = 16
MOUSEDRAG = 32
CLICK = 64
DBLCLICK = 128
KEYDOWN = 256
KEYUP = 512
KEYPRESS = 1024
DRAGDROP = 2048
FOCUS = 4096
BLUR = 8192
SELECT = 16384
CHANGE = 32768


Detailed Call Stack
-------------------