I have developed a Blackberry app in Blackberry JDE. It is working fine in simulator. As I have used different API which need signing key, I try it to 'Signature Tool' so that I can run it in device. Initially the Signature Tool was showing like below.

When I 'Request' for signature, all the row having 'Not Signed' status, successfully converted to 'Signed'.

Now when I install the app in my Blackberry device and try to run it, it gives massage "Error starting Certainteed: Module 'Certainteed' attempts to access a secure API.". I think this massage should come only for not signed Cod file. Is there any problem in my signing process?
N.B. I am using Blackberry JDE 4.6 and Blackberry Curve 8520 (software version 4.6.1.286)