Balance 4.1.1 has a fix for this issue. We no longer complain when we see a different statvers version number in the output of /proc/self/mountstats other than 1.0
We originally had thought that any change from 1.0 to a higher number could cause issues, e.g. the addition of new fields and columns in the output. However this proved not to be the case so we removed the version check.