Preps 8 - Marks problem


Hi All,
I'm banging my head against my desk trying to move the position of a simple side-guide mark, but Preps doesn't seem to want me to do it.
I have the Press Run selected, I can SEE the place to change it, but it's grayed out and inaccessible. (as is the center guide length)
What am I missing? I used to be able to do this at will. (It's been a while since I've needed to)
Preps 8.3.0 Build 175
Mac Sierra - 10.12.6

Screen Shot 2019-09-10 at 4.05.15 PM.png


Oh fer cryin out loud.

Thanks Joe.

"But I swear I checked that" he said, trying to remember if he checked that...

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Color is in demand in all types of documents, making color management a critical part of Digital Printing 5.0. Managing color on one device/press can be an easy task with the correct tools and processes. But managing color to ensure printed pages are consistent and repeatable across the different substrates and color gamuts of toner and inkjet can be a much bigger challenge. Properly implemented color management workflows can help achieve consistent color results across multiple devices. Although many end-customers are claiming satisfaction with “pleasing color,” two challenges are still in play. Link to Article