Different camera models support different properties. For example, the Orca Fire does not support READOUTSPEED, so the driver prints this error message:
Trigger Polarity: 0FAILED: (DCAMERR)0x80000825 Invalid Property! @ dcamprop_setvalue() : IDPROP:READOUTSPEED, VALUE:2
FAILED: (DCAMERR)0x80000825 Invalid Property! @ dcamprop_getvalue() : IDPROP:READOUTSPEED
The driver should be improved to first determine if a property is supported before trying to access it.