I'm assuming you used the 4.3 softmod guide from this site correct?
Extract to freshly formatted SD card
In Priiloader choose the install/load option
Select the boot.dol file
Load IOS249 - if that doesn't work try IOS36 or IOS236
Install IOS60 v6174 with all patches applied - Let installation complete
Back out to the previous menu by pressing B
Choose System menu and Install SM 4.1e
Reinstall Priiloader - Dop-Mii should have backed it up
If Priiloader wan't backed up and reinstalled, exit to HBC from Dop-Mii and install it before you shut off your console or return to the SM.