Problems with Environment Variables
If you have already set the desired environment variable as described
here and the program still gives an error message,
then consider carefully what that message means.
Error message = "Environment variable is not set"
Error message = "Environment variable set to non-existent directory"
Error message = "Environment variable is not properly set"
Environment variable is not set
If the error message states that the environment variable is not set,
IT MEANS PRECISELY THAT ! The most likely reason is that your spelling
of the variable name is WRONG. To check which environment variables are
set, do the following (works for all versions of Windows):
If the name is missing from the list, the ONLY possibilities are :
- Open a DOS box (or a Command prompt box in Windows NT/2000/XP)
- Type the word "Set" (don't use the quotes though)
- This will print out all the currently set environment variables.
Look in this list carefully. If the variable name is misspelt,
then set it again with the
correct spelling (see here).
- You never actually set the variable !
- For Window 95 users (and possibly Windows 98/ME)
you have run out of environment variable space. The default amount of space
is ridiculously small, and if you have set several environment variables, this is
a distinct possibility. Do the following to increase this :
SHELL=C:\WINDOWS\COMMAND.COM /P /E:4096
- For Windows NT/2000/XP users, the variables have not been set for the
currently logged user. Please reset them as system variables or make sure each user
can access them (see here).
Environment variable set to non-existent directory
For environment variables (like WINGXDIR) which point to a directory, it
is vital that the directory(folder) actually exists. Again, check spelling carefully as
Environment variable is not properly set
For environment variables (like PGFONT) which point to a file, it
is vital that the file actually exists. Again, check spelling carefully as
described above, and check also that the file is actually located where you think