./bbwp ~/Work/Temp/BB10_output/myapp.zip -g keyStorePass -p params.json --buildId 2 -o ~/Work/Projects/myapp/out/ -v params.json is the KEY to success ;) { "blackberry-signer": { "-cskpass": "cksPassword" } }

Problems signing a BB10 WebWorks Application - BlackBerry Support Community Forums

Problems signing a BB10 WebWorks Application - BlackBerry Support Community Forums:

The problem lies in the fact that my keystore and csk passwords are different and bbwp is expecting them to be the same (which it doesn't do for the playbook). If I created new keys I would use the same for both.

Anyhow I have found a solution and that is to use the -p parameter:

bbwp c:\myapp\myarchive.zip -g mykeystorepassword -p params.json -o c:\myapp\output

The csk password is specified in the params.json file thus:

{
    "blackberry-signer": {
        "-cskpass": "mycskpassword"
    }
}

Thanks everyone for your input.