having problems with buddypress

having some issues with buddypress.
a) have multisite
b) had buddypress installed
c) set buddypress MULTIBLOG to True
d) realized I didn't need to do that.
e) tried to go back to basic buddypress
f) system will not save the associated 'Register' or 'Activate' pages. keeps returning to none after I make selections.
g) deactivated & deleted buddypress. did not go into tables.
h) re-installed. reactivated.
i ) buddypress not working.

need help. could use support. thanks