Bob,
?
Also try recording a warrant that doesn't include this block.
Supposedly an NX Warrant doesn't need a block to have detection as it allows 'Dark' blocks. That would mean if the block had an issue then it mightn't register as a problem.
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H.O. Australia (Layout in Progress)
Digikeijs DR5000 LocoNet
JMRI v5.10 DecoderPro/Warrants/CPE/SML/LogixNG
Java: OpenLogic jre-17.0.12.7 ? Windows 10