Hi Lars,
the CheckStyle team has just released version 6.2 which fixes the serious backwards compatibility problems we had with versions 5.9 ... 6.1.1:
https://github.com/checkstyle/checkstyle/issues/505
Could you please release as quickly as possible a new version of ECLIPSE-CS with the new CS version?
Thanks in advance!
Arno
eclipse-cs-6.2.0 is out!