I have taken an existing project with about 4 drawing files that have 4-5 layouts setup in each and created a Sheet Set based on these files. Works great and I can rename and reorder the set as needed. The problems come about when someone double clicks a sheet to open it and AutoCAD crashes. Am I missing something? Does the sheet set manager just not work with multiple layout tabs well. I know the documentation recommends not doing this, but it does not say you can not. Any help would be appreciated.