Ok...

please tell me how far do you get.

1) you select the Library tab
2) on the left pane you press 'Add folder'
3) a dialog 'Select directory to share' pops up
4) you browse through your hard drive and select a folder with not many files and no sub directories (for testing).
5) You press the 'Select' button of the pop-up dialog.
6) The dialog closes.
7) After waiting a couple of seconds, depends how large the folder is the folder appears on the left pane of the Library tab

Also please check if you have a phex.error.log file in the 'phex' directory in your user home directory.

Gregor

__________________