Project Publishing


In regards to project publishing. The project I am working on has 1000+ pages yet I am only trying to publish approximately 40 of them. When I click into project publisher  I am selecting the required pages in the file manager tab, then clicking create package. I am finding when I do this that the project randomly goes through every single page of the project, waits on that page for a certain amount of time then changes page. It does this until every page in the project has been selected and then creates a package with every page in it, not just the pages I want. Not sure how to overcome this. 

Any help is appreciated.