so far as i know there is no more scrypt-mining-support with that version, try elder ones
Edit: i'm using cgminer versions 3.01 + 3.10 + 3.11 + 3.20 on different rigs
3.7.2 is the last version with scrypt support
Tried 3.2.2 same startup error as above. Will not mine at all invalid nounce error!