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Registering low-privilege API COM+ package...COM+ Registration Error: System.NullReferenceException:
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Chris.Sieben
#1 Posted : Tuesday, November 1, 2011 2:55:41 PM(UTC)
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Location: St. Cloud, MN

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Installing Web Server Pro on Windows 7 64-bit does not succeed. Message from the install log says
"Registering low-privilege API COM+ package...COM+ Registration Error: System.NullReferenceException: Object reference not set to an instance of an object"
The install rolls back.
Now my Old Cassini install is broken too.
Messed up windows installer thinks old cassini is still installed and I can't unintall old Cassini now.
What should I do?
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Ultidev Team
#2 Posted : Tuesday, November 1, 2011 3:23:38 PM(UTC)
Ultidev Team

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Hello, Chris.

Sorry for the trouble. Could you please us diagnostic info as described here? This will help us provide steps to restore your system.

Best regards,
UltiDev Team.
Please donate at http://www.ultidev.com/products/Donate.aspx to help us improve our products.
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Ultidev Team
#3 Posted : Tuesday, November 1, 2011 4:53:21 PM(UTC)
Ultidev Team

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According to original poster's email, the problem went away after UltiDev Cassini was uninstalled manually. He also noticed that he had DTC errors in Windows Event Log, which could have affected stability of COM+. Anyway, second attempt to install was successful.

Best regards,
UltiDev Team.
Please donate at http://www.ultidev.com/products/Donate.aspx to help us improve our products.
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Ultidev Team
#4 Posted : Monday, November 14, 2011 11:03:25 AM(UTC)
Ultidev Team

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To make the problem easier to track.

Code:

Registering low-privilege API COM+ package...COM+ Registration Error: System.NullReferenceException: Object reference not set to an instance of an object.
at UWS.Framework.ComPlusHelper.CreateServiceFromComPlusApp(String appID, ProcessIdentity userContext)
at UWS.Framework.ComPlusInstallHelper.InstallComPlusAssembly(Assembly servicedComponentAssembly, Nullable`1 processIdentity, String tlbPath)
Please donate at http://www.ultidev.com/products/Donate.aspx to help us improve our products.
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