Yes, this would normally be the reason why it is disabled. Easy way
to check, turn on the flag to sell without inventory in your store
config.
--
Bruce Kroeze
http://www.ecomsmith.com
It's time to hammer your site into shape.
It writes:
Sorry, we don't have any of that combination available.
So it seems it's out of stock :)
--
Alessandro Ronchi
SOASI
Sviluppo Software e Sistemi Open Source
http://www.soasi.com