Checkout Error for virtual products: no payment moduls installed

[zac]

Hi all,

 

I've a perfectly running PS V1.3.1.1 (at least until now).

 

Several days ago I decided to offer a virtual product. During checkout at step "payment" following message is shown: "No payment modules installed"

If I order together with any "real" product, everything works fine.

 

Any idea where to look at?

 

Thanks, Chris

 

BTW: In Debug-Modus no errors are displayed. The message is on-screnn