fatal error C1083

Hi,

I am using a VC++ V7.1.3088. Although, I have a directory reference of the subjected file in;
Configuration Properties
C/C++
General
Additional Include Directories
I get .... : fatal error C1083: Cannot open include file: 'appsywcomdev.h': No such file or directory.... during compilation.

If I delete the directory reference and reset it again Confiration Properties, build completes properly. However, whenever I modify any file in the project and save. The problem reappears again. Again, I need to refresh the Additional Include Directories to overcome the problem.

Any thought?

Thanks,,