VC++ statement completion options

I use multiple computers in developing projects and ran into a hiccup when tranferring the project files from one to another. It seems the auto completion utilities: auto list members, auto parameter info, and auto type info, quit working over time. I searched for documentation on what could cause or correct this problem to no avail, but, I did finally stumble on a solution. There are two files located in the project directory named 'projectname'.opt and 'projectname'.ncb. I closed the respective project, deleted these two files, then reopened and rebuilt the project which rebuilt these two files. The problem was gone.

Hope this helps,

Kirk