Here's more detailed error code from verbose logging
MSI (s) (C4:FC) [17:44:17:683]: Executing op: ComponentRegister(ComponentId={39A436F1-525F-4D9C-95E5-01D682F0FB25},KeyPath=<\Microsoft.VisualStudio.Tools.Applications.AddInAdapter.v9.0,version="9.0.0.0",publicKeyToken="b03f5f7f11d50a3a",processorArchitecture="MSIL",fileVersion="9.0.30729.4130",culture="neutral",State=3,,Disk=1,SharedDllRefCount=0,BinaryType=0) MSI (s) (C4:FC) [17:44:17:683]: MSCOREE not loaded loading copy from system32 MSI (s) (C4:FC) [17:44:17:683]: Assembly Error:Function not defined in specified DLL.
MSI (s) (C4:FC) [17:44:17:683]: Note: 1: 1935 2: 3: 0x8002802F 4: 5: CreateAssemblyNameObject 6: Microsoft.VisualStudio.Tools.Applications.AddInAdapter.v9.0,version="9.0.0.0",publicKeyToken="b03f5f7f11d50a3a",processorArchitecture="MSIL",fileVersion="9.0.30729.4130",culture="neutral" DEBUG: Error 2908: Could not register component {39A436F1-525F-4D9C-95E5-01D682F0FB25}. MSI (s) (C4:FC) [17:44:19:227]: Product: Microsoft Visual Studio 2010 Tools for Office Runtime (x86) -- The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2908. The arguments are: {39A436F1-525F-4D9C-95E5-01D682F0FB25}, ,
MSI (s) (C4:FC) [17:44:19:227]: Executing op: ComponentRegister(ComponentId={B25064D6-77BB-4B1B-B4CC-F8EDF50C7B6D},KeyPath=<\Microsoft.VisualStudio.Tools.Applications.AddInAdapter.v10.0,version="10.0.0.0",publicKeyToken="b03f5f7f11d50a3a",processorArchitecture="MSIL",fileVersion="10.0.31119.0",culture="neutral",State=3,,Disk=1,SharedDllRefCount=0,BinaryType=0) The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2908. The arguments are: {39A436F1-525F-4D9C-95E5-01D682F0FB25}, , MSI (s) (C4:FC) [17:44:19:243]: Assembly Error:Function not defined in specified DLL.
MSI (s) (C4:FC) [17:44:19:243]: Note: 1: 1935 2: 3: 0x8002802F 4: 5: CreateAssemblyNameObject 6: Microsoft.VisualStudio.Tools.Applications.AddInAdapter.v10.0,version="10.0.0.0",publicKeyToken="b03f5f7f11d50a3a",processorArchitecture="MSIL",fileVersion="10.0.31119.0",culture="neutral" DEBUG: Error 2908: Could not register component {B25064D6-77BB-4B1B-B4CC-F8EDF50C7B6D}. MSI (s) (C4:FC) [17:44:20:226]: Product: Microsoft Visual Studio 2010 Tools for Office Runtime (x86) -- The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2908. The arguments are: {B25064D6-77BB-4B1B-B4CC-F8EDF50C7B6D}
I have tried to re-install .NET 4 client profile then re-install VSTO 4 but still no gain. Any suggestions?
This has been reported in another forum. Apparently if no components of Office 2010 have been installed in the machine in particular the message can be ignored. I certainly found that in my case that I only have Excel 2013, there were no issues with the Add in and it works fine despite the error message.
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