CCSTUDIO: Error 87 caused by 'PROJECT_ROOT cannot be resolved'.

Part Number: CCSTUDIO

Tool/software:

Hello,

I've recently started to experience a problem when I move to a new project inside of my workspace.

When I try to build the project I get a series of Error 87's and a final warning that says "Build-variable 'PROJECT_ROOT' cannot be resolved.  This project may not build as expected'.  When I look under Project Properties->CCS Build->Variables I don't find this build variable.  I make sure to click the box "Show system variables".   If I try to perform a PROJECT-> CLEAN I still get the error but I've found after doing this clean if I then close CCS and reopen the project will build properly.  Going back to the Variables tab PROJECT_ROOT is now present and pointing to the project in question.

Its not a show stopped now that I have a work around but it only started happening recently so wonder what I might have changed to induce the problem.  The workspace and the projects in it have been reasonably stable with code changes but nothing significant in regards to project setup or configuration..

Thanks - Bruce