Problem with GMRFSkyrideBlockUpdateOperator?

[arthurKocher]

When trying to run testSkyRide.xml as it is, the GMRFSkyrideBlockUpdateOperator is never accepted.

After changing its scale factor to <1 (e.g. 0.9 or 0.1) and setting initial values for the skyrideLogPopSize to 1, both skyrideLogPopSize and skyridePrecision seem to mix well.

The GMRFSkyrideBlockUpdateOperator in BEAST1 doesn't accept scale factors <1 so I wonder if there is a problem somewhere or if this is an expected difference in the BEAST2 implementation.