Q: Why do I get the message:
*** ERROR: &INTEREST Is Not a Valid Command At This Time

A: Your problem is that the &INTEREST Menu became obsolete with REV 6.00 (Sept 2001)! This is discussed in the release documentation for that release. Click here for a description of the changes and how to fix your input.

Q: Why do I get the message:
*** FATAL ERROR: File Type PPOUT Has Not Been Defined?

A: Your problem is that the command

     &device -use_file ppout xxxxx

    &channel ppout -file xxxxx