I suspect this problem is more an issue with installing into a development environment, but I can't seem to get any VSTO add in to install into Outlook 2003 after trying to install the Outlook plug-in. I have a VS2005 environment with the VSTO and interop assemblies installed.
Even when I manually try to add the outlook plug-in as a COM add-in, I get error messages telling me it’s not a valid Outlook add-in. Has anyone seen this behaviour before?
What exactly did this add-in add to my VSTO environment?
You cannot manually add a VTSO plugin to Outlook. You must use the provided setup application or let Visual Studio do it for you. This is because the VTSO must be added as the plugin to Outlook with additional parameters that point to our plugin.
Do you have the source code to the SplendidCRM Plug-in for Outlook?
No, no source code. Let me re-word what I’m asking.
I did run the proper install for the Outlook plug-in and basically nothing installed. In trying to understand why. I tried a few different ways to test why ,one being manually attaching it. As you mention, VSTO does not allow a plug-in to be attached this way and thinking about it, it makes sense.
I even tried to create a simple “Hello World” plug-in in VSTO and install it. It too will not install. Even older plug-ins that I once developed no longer install with VSTO and VS2005. Is there something I should be looking at, perhaps versioning differences in Primary Interops etc.. that may have changed from the attempted install?
Just a note, I installed the plug-in on another machine running VS2005 with VSTO and Office 2007. Works fine.
Thanks for the replies. It turns out that I had a previous CTP of VSTO from way back when that never uninstalled correctly. Perhaps installing the plug-in caused my VS2005 to see the discrepancy and would not allow any plug-in to fire in the application event. Did a clean install and everything is working great!
