>In the INIT of a project hook I have:

FOR EACH loFile IN APPLICATION.ACTIVEPROJECT.FILES

which has been working for years. Now I get a 'Property FILES not found' error on this line. The debugger shows Application.Project appears to be the valid and correct project; .FILES is an object but .FILES.Count gives 'Expression could not be evaluated'. This isn't project specific - I get the identical error in another project. Also, at least AFAICS, there's no #INCLUDE that could mess this up and if I step out of the code the project opens normally with all files listed.

I am not sure about this issue either as I have never hit it and I use project hooks all the time. One thing to try is to clean the project up via the Project | Clean Up Project option. It might be a problem with a corrupt record in the project.