GPIB ESTB 15 error and Labview

[LabVIEW_newbie]

I am using LabVIEW to make vi's that control a compumotor 2100 indexer. One of the steps is to do a wait for SRQ then a serial poll. The serial poll keeps on giving me a GPIB 15 error. The NI database said to disable autopolling, but I don't know how to do that in LabVIEW 6. Any ideas or help on how to fix the error, or disable autopolling are gladly appreciated.

[Lab Viewer]

Hi,
this article may help you: 'How can one tell when the Autopolling feature of National Instruments GPIB boards will function.' (http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/9c25d443b106b30f862562870079afe8?OpenDocument)
good luck