Thanks for the help! It looks like the permission issue is fixed. However, the LXDE menu entry does not seem to be working.
If I type spiderfix; SpiderOak in a terminal, the file is copied and SpiderOak launches. However, if I select SpiderOak from the menu, nothing happens. Is there something wrong with my .desktop file? See the file contents below. Thanks.
[Desktop Entry]
Version=1.0
Encoding=UTF-8
Type=Application
Name=SpiderOak Backup
Comment=SpiderOak Secure Backup and File Sharing Client
Terminal=false
Categories=SpiderOak;Network;X-MandrivaLinux-Internet-WebBrowsers;
Icon=/usr/share/pixmaps/spideroak/spideroak.png
Exec=spiderfix; SpiderOak