Uhh, Mr. MPH, you might want to do this:

https://blog.zencash.com/mandatory-upgrade-zen-2-0-14-super-nodes/

From the above link:

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We are pleased to announce ZenCash 2.0.14 upgrade is now available! All node operators, exchanges, and pool operators must update from the previous version before June 28th when the current version is deprecated and will stop working (at block 332576). Please follow the instructions below.
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My miners have been mining "air" for the last 8 hours or so on MPH since we hit block 332576.