Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

■ You tried to assign an invalid name to a project or make
  (.MAK) file.
 
■ Possible solutions:
 
  • Rename the project file using a .MAK extension.
 
  • Verify that the file name specified follows standard
    MS-DOS naming conventions. For example, the file name
    "GEORGEWAS.MAK" is invalid, while "GEORGWAS.MAK" is
    valid.
 
■ If you need additional help, move the cursor to a keyword
  and press F1 to open the Help window.