Thanks for the continued detailed bug reports.
It looks like block 263567 contains the problematic transaction with the HODL'd date in the past. For reasons I'm not yet clear on, some systems running v3.0.0 seem to accept this and others not (maybe particularly MACs?)
First thing to try, if you're compiling yourself is to use the master branch which contains a fix, and not the 3.0.0 release.
https://github.com/HOdlcoin/HOdlcoin/tree/HODLCoin0.11.3Clearly we need a new release with this fix asap at this point. I'll finalize this shortly.
I am not sure how to compile myself on a Mac. If someone can guide me I'll give it a shot.