Cannot SET SPOOL*DIRECTORY

[Sam68]

I have tried a variety of commands:
SET SPOOL*DIRECTORY C:
SET SPOOL*DIRECTORY C:\
SET SPOOL*DIRECTORY "C:"
SET SPOOL*DIRECTORY 'C:'

but it always returns the error message:
Cannot SET SPOOL*DIRECTORY

I am able to use SPOOL

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PL/SQL Developer
Version 9.0.6.1665
5 user license
Windows XP Professional 5.1 Build 2600 (Service Pack 3)

 

[Sam68]

Never Mind - found the typo in the doc - should use SPOOLDIRECTORY