Could not install custom actions error

Question

heres the users info
running windows 7 pro 32bit oem
office standard 2013
visio 2013
adobe pro X
CRM 2011
using exchange 2010
we the user click on a message in outlook left or right click the error
Outlook is crashing giving this error: "could not install custom actions is displayed"
which then crashes outlook:
This error shows in event log:
Faulting application name: OUTLOOK.EXE, version: 15.0.4551.1004, time stamp: 0x5253ad6f
Faulting module name: OUTLOOK.EXE, version: 15.0.4551.1004, time stamp: 0x5253ad6f
Exception code: 0xc0000005
Fault offset: 0x004f1d25
Faulting process id: 0x25c
Faulting application start time: 0x01cefcd257c1e5fa
Faulting application path: C:\Program Files\Microsoft Office\Office15\OUTLOOK.EXE
Faulting module path: C:\Program Files\Microsoft Office\Office15\OUTLOOK.EXE
Report Id: a3d5969e-68c5-11e3-a4c5-7845c40b5bf7
I have found issues relating to this issue and voting buttons, we do not use them.
now the weird part, when logging into OWA, the message shows as corrupted and displays this error:
Exception
Exception type: Microsoft.Exchange.Data.Storage.CorruptDataException
Exception message: The voting data was corrupt.
Call stack
Microsoft.Exchange.Data.Storage.VotingInfo.Read(BinaryReader reader)
Microsoft.Exchange.Data.Storage.VotingInfo..ctor(MessageItem messageItem)
Microsoft.Exchange.Data.Storage.MessageItem.get_VotingInfo()
Microsoft.Exchange.Clients.Owa.Premium.RenderingUtilities.RenderVotingInfobarMessages(MessageItem message, Infobar infobar, UserContext userContext)
Microsoft.Exchange.Clients.Owa.Premium.ReadMessage.OnLoad(EventArgs e)
System.Web.UI.Control.LoadRecursive()
System.Web.UI.Control.LoadRecursive()
System.Web.UI.Control.LoadRecursive()
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
when the same user logs into OWA lite version the message displays fine.
I have tried removing/reinstalling outlook/office/crm/ ect
I have setup a whole new pc, still happens
I even installed outlook 2007 to see if it would happen and it did, im at wits ends, and I cannot put crm back on the users pc until I rule out it. 
I have tried repairing the exchange mailbox and no corruptions were detected.
any ideas that can point we in the right direction would be appreciated.
thanks for your time

Answer 1

Hi,
According to your description and the error message, the issue seems more related to the Exchange user account. Because you had re-build a client environment and check the voting buttons.
I noticed that if you logged into OWA it was corrupted, and it worked well in OWA lite version. A lot of feature were available in OWA lite version. Such as, Reading Pane, Share a calendar, Public Folders, etc. I suppose that the issue also may be caused some
custom forms loading.
Following this, I recommend you create a new user account in Exchange, then try to disable and open the feature one by one to test.
Here is the feature list:
http://blogs.technet.com/b/ilvancri/archive/2010/04/07/exchange-2010-owa-versus-owa-light.aspx
Reading Pane: Click View > Reading Pane, and then Right or Bottom.
http://office.microsoft.com/en-us/outlook-help/turn-the-reading-pane-on-and-off-HA102830304.aspx
Share a calendar: Use command to turn off it in Exchange server.
Regards,
George Zhao
TechNet Community Support