I'm trying to create a ustom library for a pack of trees I haave purchased but when I choose the maxfile in the item settings dialog, I get the following warning ----- "It is not possible to do this operation if a maxfile if being created. Please, open the Library Browser from the Max Modify panel and try again." The select object windows appears next, but doesn't contain any objects to pick, even though the maxfile I have picked contains the tree.
When I open the browser and try again I get the same message.
I'm a bit stuck as to what to try, I have tried goruping the tree in the maxfile and also tried attached all the object so they are one object. Neither have worked.