Exporting / Importing sites PS 2007

[mike.mahoney]

I wanted to move "Shared Documents" to another instance of Project
Server. I used the stsadm - o export/import commands. These clearly
pick up all the shared documents which sit in the root site as well as
lower level project sites. As I was importing into a development
environment I was not too concerned with this data going across.

However the end result is my PWA instance no longer functions - get
usual WSS error, with the message "The enablesessionstate attribute on
the page directive is not allowed in this page".

Q1 - How do I fix this?
Q2 - How would i migrate my Shared Documents site?

Thanks

Mike