FIX: PWB May Exit to MS-DOS If TMP Is Set Incorrectly

If the TMP environment variable is set only to a drive (with no path specified), the Programmer's WorkBench (PWB) version 1.0 or 1.1 may "crash" out to MS-DOS when a compile is attempted. The screen will still show PWB editor, but there will be a prompt displayed.

Microsoft has confirmed this to be a problem in PWB versions 1.0 and 1.1. This problem was corrected in PWB version 2.0.

To reproduce this problem, use the following procedure:

1. Set up the environment to run PWB.
2. Set the TMP environment variable to the current drive, without specifying a path. For example:
   SET TMP=C:
3. Execute PWB and create or load a simple source file.
4. Attempt to compile the source file. (Note: If the Compile option is not available on the Make menu, make sure the file has a name with a .C extension.)