Sounds like this won’t solve everyone’s problem since some of you can’t export blank files.
These are the instructions sWilliams gave me.
“A layout file is just a renamed zip file. To open and look inside:
Rename yourfilename.layout to yourfilename.zip
Unzip yourfilename.zip into a folder of it’s own
Browse inside to the folder named pages
The problem was in the file named page63.xml
On line 640 of that file you will find the start of the definition for a Linear Dimension”
Hope this helps some of you. Becca