I couldn't even rip it using DVD Decrypter only... Here's what worked for me:
1. Make sure you're using the last version of
DVD Decrypter.
2. Download
RipIt4Me.
3. Run RipIt4Me and select Wizard Mode.
4. Select a target directory and select Next.
5. In the popup dialog that comes up after a while, select Create PSL.
6. Now in step 3, select Cancel and exit RipIt4Me.
7. Run DVD Decrypter and select your usual settings.
8. In the File menu, go to Protected Sectors List -> Import. Navigate to the folder you created in RipIt4Me and choose the file
RipIt4Me.psl.
9. Rip the damn thing.
Method (c) by Zarxrax