Has anybody uploaded an applet to nokia 6131 correctly using sm@rtcafe? (JLoader)

Wich configuration have i to use for applets uploading with JLoader?

I think that I am setting correctly JLoader (keys, key version, etc ... ) but when i try to connect to the mobile , i obtain that result:

"6A 88

Failed - reason code: Key set not found or key invalid or incomplete"

However if i use GPShell, everything runs ok.

Any ideas?

Thanks in advance