[argyllcms] Bug in 1.1.0 RC1

Using a xrite i1 Display 2 with 1.1.0 RC1, if I specify window coordinates, 
dispcal fails to detect instrument:

david@maquina:~/Argyll_V1.1.0_RC1/bin$ ./dispcal -v  -r -yc
XRandR 1.2 is faulty - falling back to older extensions
Setting up the instrument
Place instrument on test window.
Hit Esc, ^C or Q to give up, any other key to continue:

david@maquina:~/Argyll_V1.1.0_RC1/bin$ ./dispcal -v -R -yc -p 0.5,0.5,1.0
XRandR 1.2 is faulty - falling back to older extensions
Setting up the instrument
Need emissive measurement capability,
but instrument doesn't support it
dispcal: Error - new_disprd() failed with 'Instrument Access Failed'


With 1.0.4 (the one on debian), it worked ok:

david@maquina:~$ dispcal -v -R -yc -p 0.5,0.5,1.0
XRandR 1.2 is faulty - falling back to older extensions
Setting up the instrument
Place instrument on test window.
Hit Esc, ^C or Q to give up, any other key to continue:

Is this a known bug?

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