Hi,
Spider8 is not a National Instruments system. I assume that the Spider32.dll is the Language interface file to program this device.
If the dll is executing and the return value is an error code (10004), that is outside LabVIEW's domain. You need to check the device's documentation on the meaning of the error. An error code by itself has no meaning, it is a manufactuer specific code.
Hope this helps.
DiegoF
National Instruments.