[mrtg] Problem with cfgmaker

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New installation from scatch.
Windows Server 2012 R2
Mrtg 2.17.4
Perl 5.16.3

perl mrtg returns without error.
perl cfgmaker public at 192.168.1.1 gives this output:

PS C:\Program Files (x86)\mrtg-2.17.4\bin> perl cfgmaker public at 192.168.1.1
--base: Get Device Info on public at 192.168.1.1:
Undefined subroutine &SNMP_util::encode_oid called at C:/Program Files
(x86)/mrtg-2.17.4/bin\..\lib\mrtg2/SNMP_util.pm line 1346.

Any idea what is the problem?