biblatex-biber compatibility problem

[Thomas Ruedas]

Hi,
I have installed the current biblatex-biber (2.11.0) on my Mac (macports 
v.2.5.4 on Mac OS X 10.13.6) and tried to use it, but the run fails with 
the error
 > biber supplement
INFO - This is Biber 2.11
INFO - Logfile is 'supplement.blg'
INFO - Reading 'supplement.bcf'
ERROR - Error: Found biblatex control file version 3.3, expected version 
3.4.
This means that your biber (2.11) and biblatex (3.7) versions are 
incompatible.
See compat matrix in biblatex or biber PDF documentation.
INFO - ERRORS: 1

Has anyone else experienced this? I have the impression that the port is 
not built correctly. Should I report this as a bug?
Cheers,
Thomas