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documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

At compile time, this error occurs when include files are
nested more than five levels deep.
 
At run time, this error may occur because:
   ■ BASIC has a limit to the number of disk files that can
     be open at one time. This limit is a function of the
     FILES= parameter in your CONFIG.SYS file. Increase
     that number and reboot.
   ■ The operating system has a limit to the number of
     entries in a root directory. If your program is
     opening, closing, and/or saving files in the root
     directory, change your program so it uses a
     subdirectory.