invalid array descriptor

    Facility: DEBUG, VMS Debugger

    Explanation: An array descriptor in the image does not have the
    correct format. This can be caused by a reference to a VAX BASIC
    array when the first line of the program has not been executed.
    The array is not set up correctly until the BASIC program
    initialization is done. This message can also be caused by a
    user program or DEPOSIT commands altering a compiler generated
    array descriptor.

    User Action: If the reference is to a VAX BASIC array,
    enter a STEP or GO command to ensure that the BASIC program
    initialization is done and then repeat the reference. Otherwise,
    if an array descriptor has not been altered, submit a Software
    Performance Report.