Inv2009 Crashing when updating Add-In

[Anonymous]

We have an Add-In developed in VB.net for Inventor2009. Every time we have to uninstall it and install a new version, Inventor won't even start. We just get error reporting utility from Autodesk which hasn't produced any results. We've added bug tracing and aren't getting anything back from it. Sometimes uninstalling and reinstalling Service Pack 2 fixes the problem, but other times, we need to uninstall Inventor and reinstall it.

Any ideas where to look? We haven't had any luck figuring this one out...

Thanks for any help...

[noontz]

I´m having this problem 4 years later with Inventor 2013 / 2014, but not as severe and only on occasion. A simple restart of Inventor is enough to fix the startup crash.

Is there any "best practices" on updating an Addin?

Is there any (registry) settings that need to be cleared, that´s not in the (un)installers scope?

The ApplicationAddInServer interface´s Activate(ApplicationAddInSite addInSiteObject, bool firstTime) has a firstTime argument that indicates persistent information. Sould this info be cleared on an update?

Bottom line: Does Inventor´s "picture" of the state of the Addin need to be cleared before an update? If yes : How?

Thanks..