This happens when you have a Layout in a BIMx Publisher set, and you publish only some of the layouts of the BIMx Publisher set.
The BIMx model knows the Layout is there, but since it wasn't published, it does not have the content.
I would check the settings you are using when you hit Publish, you may only be Publishing "Selected Items", or if you're using "Layouts In Current Issue", confirm all Layouts have been Issued.
Eli Chiasson
Dexel Architecture
http://www.dexel.ca
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