Scott,
This may help avoid the message - it has for me.
I know this works definitely with PMK files - not sure about direct linking to a PLN as I don't do that.
When setting up the view set in Archicad (Publisher) there is an option to "Save visible layers only".
This eliminates all of the additional information from the PMK file reducing its size.
I set up PMKs that show all the layers I will need (i.e. those for the same scale plans), turning off those that won't be needed (i.e. layers for other scale plans) and then set this option on.
Hope this is of help.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11