I tried to upgrade from 6.2 to beta 2. After choosing to upgrade I then
checked the box that said "Customize packages to be upgraded." The
installer then went to get a list of packages. After ~30 seconds an
exception error appeared:

Traceback (innermost last):
 File "/user/bin/anaconda", line 423, in ?
   intf.run(todo, test = test)
 File "/usr/lib/anaconda/gui.py", line 297, in run
   self.icw.run ()
 File "/usr/lib/anaconda/gui.py", line 639, in run
   mainloop ()
 File "/usr/lib/python1.5/site-packages/gtk.py", line 2554, in mainloop
   _gtk.gtk_main()
 File "/usr/lib/python1.5/site-packages/gtk.py", line 125, in __call__
   ret = apply(self.func, a)
 File "/usr/lib/anaconda/gui/py", line 373, in nextClicked
   next = self.currentScreen.getNext ()
 File "/usr/lib/anaconda/iw/examine_gui.py", line 26, in getNext
   from package import IndividualPackageSelectionWindow
ImportError: No module named package


This was using the GUI installer on a Dell OptiPlex GX1, 64 MB RAM, P3 500.