Hello.
After installing the Lotus Notes Client 8.0.2 the client shows the error message “notes:///CalenderFS?OpenFrameset Anwendung nicht gefunden” if you open your calendar with the bookmark entry. I copied bookmark.nsf, names.nsf, desktop6.ndk and my ID in the data folder, where Notes save all the other templates etc. The Notes Client 6.5 was uninstalled. This effect is on every application which you saved in the bookmark.
Something is strange: If you choose an other replication of the cluster partner, it works on time. If you open the application again, it doesn’t work and it only works again for one time if you change to the other cluster partner.
Subject: Bookmark-Error
Hello again. I’ve solved the problem, maybe I should search before I post my problems 
This problem was also described here:
http://www-10.lotus.com/ldd/nd8forum.nsf/5f27803bba85d8e285256bf10054620d/df5b412bfd3d03f3852574ab007c16ae?OpenDocument&Highlight=0,n%3Ftes%3A%2F%2F%2F
I added some keys in the registry of Windows XP and it works. Here is the code of the registry file. Just copy it in a textfile and rename it to bookmarkerror.reg. Of course you have to change the paths of the file
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\NotesFile]
@=“Notes Database”
[HKEY_CLASSES_ROOT\NotesFile\DefaultIcon]
@="C:\Program Files\IBM\Lotus\Notes\notes.exe "
[HKEY_CLASSES_ROOT\NotesFile\Shell]
[HKEY_CLASSES_ROOT\NotesFile\Shell\Open]
[HKEY_CLASSES_ROOT\NotesFile\Shell\Open\Command]
@=“C:\Program Files\IBM\Lotus\Notes\notes.exe %1”