Fresh install of 10.5 error

[Simmer]

I've reinstalled 10.5 after going to 10.6 and it not working.

 

I'me getting this screen immediately after logging in, previously it would let me use the back button and then use the system ok but its not even doing that now.

 

 

It was working fine until having to reinstall

 

Any ideas?

[Simmer]

Trying to alter the drive mappings for the users home drive also seems to not be saving any changes i make