Werk #3000: Host check command: "Use a custom check plugin" was not working with CMC

Component Setup
Title Host check command: "Use a custom check plugin" was not working with CMC
Date Mar 1, 2016
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
1.4.0i1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
1.2.8b4 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

The setting "Use a custom check plugin" in the "Host Check Command" rule caused an exception on activate changes, when using the CMC.

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