Importing screening library in discovery studio

Dear all,

I 've tried to convert a Maybridge screening library with de novo library generation.

I've downloaded it at

http://www.maybridge.com/portal/alias__Rainbow/lang__en-US/tabID__229/DesktopDefault.aspx

The library is Hitfinder database (format sdf).

The job ended with 0 library generated

How can I fix it?

Thanks