Last week I had some significant trouble creating an install for an Office 2003 template created in Visual Studio 2008 using VSTO 3.0 (but it works on my machine...) . Although there's a lot of docs on MSDN the information is not easy to figure out (guess there's just too much info...). Anyway today I noticed some new tools that were made available during the ODC 2008 and the trouble shooter in particular saved my day. So if you are into VSTO dev, go and get these tools!
Here's how MS describes them:
"A set of developer tools that provide additional functionality useful in Office-based development. These tools include Visual Studio add-ins as well as standalone Windows Forms and console applications. The VSTO Power Tools also include a set of re-usable class libraries to simplify Office development."
Andrew Whitechapel has blogged about this and explains in a bit more detail:
I hope these do end up as fully supported tools either seperate or as part of a Visual Studio service patch.