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.
Please create a support case. CSS will set up a webex for sustaining to triage. I checked the sources for 18.104.22.168R1 and that error message no longer exists, it was taken out in 4.1.1 so it is not clear how you are still seeing this error. Sustaining will need to take a look at the appliance during the webex to investigate this issue further.