No variable table

I am trying to run my script with ROOT Version 5.15/08 on windows 2000 using " .l script.c ". But the answer is " No variable table ". what means that ? and how to solve this problem.
thank before !

You can load your macro with “.L script.c” (note the capital L) or execute it with “.x script.c”.
If you type “.h” (help) in a Root prompt, you will get the list of commands, and see what does “.l”:
l <[var]> : list local variable