Problems Driving Pulsar Observatory Dome from Autoslew via ASCOM

[deepskyman]

Hi there, I’m looking for some assistance with a problem I am experiencing trying to drive my Pulsar dome from Autoslew.  I have managed to get Autoslew to recognise the Pulsar ASCOM driver in as much as the menu options for Open and Close of the shutter are now enabled, unfortunately when I execute the Open command I receive the following error output: 

                    -------------09:13:24------------

Dome Problem:Object reference not set to an instance of an object.

 

I am not sure where the error is being generated (no stack trace available), is this an Autoslew issue or is the message simply passed up the stack from the Pulsar ASCOM driver.  Running ASCOM diagnostics against the dome driver provides the following output.

Create              Creating device
Connected           Connecting to device                  

Name                Pulsar Observatories Dome
Description         Pulsar Observatories Dome
DriverInfo          Pulsar Observatories Dome Drive Version: 6.3
DriverVersion       6.3
InterfaceVersion    2
Azimuth, Altitude   Property not available - Property read Altitude is not implemented in this driver.

AtHome              False
AtPark              False                   
Connected           Disconnecting from device
Dispose             Disposing of device
Dispose             Completed disposal
ReleaseComObject    Releasing COM instance
GC Collect          Starting garbage collection
GC Collect          Completed garbage collection

Has anyone else had similar issues interfacing Autoslew to their dome via ASCOM?  My concern is that as far as I am aware, there is no other way to drive the dome from Autoslew other than via ASCOM, so I need to get it to work somehow.

 

Kind Regards

Paul.