Digipos DS900 OPOS

Hi,

Is there anyone using the above with Microsoft Dynamics RMS?  I have a
printer installed with a drawer on a parallel port with OPOS 2.15 installed.
The printer and cash drawer works well.  However when I close out of RMS POS
or hit F9 key the POS crash with error

Runtime 424 Object required

Any help would be greatly appreciated

regards,
Teariki