Cannot register assembly..

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Cannot register assembly..
Unable to create specified ActiveX control... 
Vamshi Kothur

Posts: 6
Joined: 2009-03-01

I am getting the following exception after restarting Vista after disabling UAC.

"Error 6 Cannot register assembly "C:\Users\vkothur\Documents\WORD ADD In\DOC Samples\VS 2005\C#\Your First Microsoft Office Add-in\MyAddin1\bin\Debug\MyAddin1.dll" - access denied. Please make sure you're running the application as administrator. Access to the registry key 'HKEY_CLASSES_ROOT\MyAddin1.StepThrough' is denied. MyAddin1

I have a taskpane with a usercontrol on it. It worked fine all the while and all of a sudden I get this error when I build. I tried everything suggested in this forum like run VS 2008 as Administrator etcetc. I commented out all reference to ADXTaskPane and now it builds successfully but when any change is done the above error reappears.

And I get below error when I open Word.
"Detailed technical information follows:
Date and Time: 4/14/2009 11:59:18 PM
IP Address: fe80::143c:37b9:3f57:fe9b%29
Current User: ncus-vkothurit\vkothur

Application Domain: C:\Users\vkothur\Documents\WORD ADD In\DOC Samples\VS 2005\C#\Your First Microsoft Office Add-in\MyAddin1\bin\Debug\
Assembly Codebase: file:///C:/Windows/assembly/GAC_MSIL/AddinExpress.MSO.2005/4.4.1913.2005__4416dd98f0861965/AddinExpress.MSO.2005.dll
Assembly Full Name: AddinExpress.MSO.2005, Version=4.4.1913.2005, Culture=neutral, PublicKeyToken=4416dd98f0861965
Assembly Version: 4.4.1913.2005
Assembly Build Date: 3/28/2005 2:06:50 AM

Exception Source:
Exception Type: System.Runtime.InteropServices.COMException
Exception Message: Unable to create specified ActiveX control.
Exception Target Site: ForwardCallToInvokeMember

---- Stack Trace ----
System.RuntimeType.ForwardCallToInvokeMember(memberName As String, flags As BindingFlags, target As Object, aWrapperTypes As Int32[], msgData As MessageData&)
AddinExpress.MSO.2005.dll: N 0197 (0xC5) IL
AddinExpress.MSO.ICTPFactory.CreateCTP(CTPAxID As String, CTPTitle As String, CTPParentWindow As Object)
AddinExpress.MSO.2005.dll: N 00000 (0x0) JIT
AddinExpress.MSO.ADXAddinModule.AddCustomTaskPanes(parent As Object, outlookFolderName As String)
AddinExpress.MSO.2005.dll: N 0000 (0x0) IL

This is the same Addin project downloaded from your site with Taskpane. The sln is called MyAddin1.sln.

Please help. This is frustrating me.
Posted 15 Apr, 2009 01:08:27 Top
Andrei Smolin

Add-in Express team

Posts: 15492
Joined: 2006-05-11
Hello Vamshi,

You need to turn the UAC on and run VS as administrator.

Regards from Belarus (GMT+2),

Andrei Smolin
Add-in Express Team Leader
Posted 15 Apr, 2009 07:09:39 Top