>>What is happening is that very often one of my programmers will forget to click on the VFP Class Library (i.e. View Classes) icon to add the correct Class Library to the VFP component toolbar. He/she will then proceed to add components to a form from a foreign project.
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>Try using the Toolbox instead of the toolbar. You can have multiple data sources for the Toolbox, say one for each project. You could even create a projecthook to open the Toolbox and set the appropriate data. You could do something similar with the Environment Manager in the TaskPane.

I was thinking along these lines - EnvMgr can be set up to serve a separate toolbox table to each project. I'm already using separate foxuser tables (one per project, so they keep independent MRU lists), separate paths etc - toolbox could also have a separate set of tools for each project.