CCS/MSP430F6779: import project error: FIle/directory cannot be located

It appears that the path to those source files is incorrect, hence the files cannot be located. Right-click on any of those source files in the Project Explorer view and check its Properties->Resource->Location and Resolved Location. I suspect the Location must be using a Path variable which does not resolve to the correct path on your machine. To check what the variable resolves to, you can click on Edit (next to Location), then click on Variable. Make sure that all variables are set to the proper paths for your system before attempting to build the project.

Another point to note: your workspace path contains whitespaces. Although this is usually ok, it may sometimes cause unexpected build issues, so it is best to avoid it, if possible. Simply create a new workspace without whitespaces in the directory path and reimport your project into it.

Hope this helps.