Hi Everybody:
I talked to my hosting company, and they were very nice to give me the solution. I feel so stupid how ovbious it was.
Hello,
"Maximum number of selections in quantity selectbox" in General Settings -> Appearance Options was set to 0. We set it back to default value (50), please adjust if necessary.
Best regards,
Roman M.
Support Engineer
www.FinestShops.com .:.
Your e-Commerce Provider