GeoPak V8i questions

Just installed Site and Survey V8i.  Two questions:

1.  A box opened the first time I opened a file after installing.  It says "Discovering types of items" and appears to be looking for something.  After at least 20 minutes, it's still going.  The file I opened was used for a modeler project and has site elements and objects.  The box popped up before I activated GeoPak.  Is Site V8i trying to ID these?  Will it ever stop?

 2.  When I try to open a project started in XM, I am asked if I want to convert the file to V8i and that it won't be compatible with XM anymore.  What in V8i won't be backwards compatible with XM?

 Thanks,

John