Algorith RSA not found

I'm trying to build an existing (and working on old pc) application in my new pc, but executing the command:



sencha app build package



this is the output:



Sencha Cmd v5.1.2.52

[INF] Processing Build Descriptor : default

[ERR] Algorithm RSA not found



The application builds correctly on my other pc. I've tried to import on my new pc sencha cmd configuration repo (directory C:\Program Files (x86)\Sencha\Cmd\repo) , but it didn't work.



Where could be the problem?



Environment:

Windows 7

Sencha Cmd v5.1.2.52 + touch 4.2.1

Java 1.7.0_21

ant 1.9,4

ruby 2.2.1p85



Thanks

Algorith RSA not found