[pet] PET error: No morphology registered

[Coote, Ravi]

Dear list,

I created a simple grammar-file based on the lingo grammar matrix. The grammar does only contain full-form words. There are no morphems configured. Running cheap results in the error message 'No morphology registered':

> cheap arabic-pet.grm 
reading `pet/arabic-pet.set'... including `pet/global.set'... 
loading `arabic-pet.grm' (arabic (2010-07-20_14:11:46_UTC)) [ disabling unification quickcheck ] [ disabling subsumption quickcheck ] 
1334 types in 0.03 s
عاد سفير
No morphology registered
سفير عاد
No morphology registered

Does anybody know if morphology can be turned off in PET? Options -no-online-morph and -no-fullform-morph don't help out, unfortuneately.

Thank you for any hints!

Regards,

Ravi Coote