V4RB not working with RB 5.1

[Cindy]

Hi,

I have just downloaded RB 5.1 from the website and am using it on Mac OS 9
(though I have also tried it on OS X). I also just downloaded the latest
version of Valentina that is set for working on RB 5.

Unfortunately, when I try to run or compile my program it comes up with:
The encrypted item ValentinaDB has an internal error which prevents it from
running. Please contac the original author for a fixed version.

What should I do now?

Thanks.

Cindy