Werk #750: Availability: fix exception when summary is on and some elements have never been OK

Component Reporting & Availability
Title Availability: fix exception when summary is on and some elements have never been OK
Date Mar 21, 2014
Checkmk Editon Checkmk Raw (CRE)
Checkmk Version 1.2.5i1
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

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