Just installed the NEW Radmin 3 Beta Viewer and cannot import the phonebook from the previous Beta Viewer. Any directions or suggestions are most welcome. Please note that I uninstalled the NEW viewer and re-installed the old viewer and re-imported the phonebook with NO problems. Therefore the .rpb file is intact and usable.
Also note that the solution described by Roman Makarov deals with importing from 2.2 to the Beta Viewer and DOES NOT WORK for importing from old Beta Viewer to New Beta Viewer.
I have tried deleting the .rpb file and copying the backup copy of the exported phone book, then renaming it to radmin.rpb with no success.