Build of sample app fails - Sencha Cmd - app.dir config property sencha.cfg - ERR

[bobg]

Using SenchaCmd-3.0.2.288 and sencha-touch-2.1.0

Build of the sample app fails with error:

sencha -sdk /opt/www/sencha-touch-2.1.0 generate app MyApp ./MyApp
cd MyApp
sencha -sdk /opt/www/sencha-touch-2.1.0 app build

Sencha Cmd v3.0.2.288
[ERR]		Please ensure this command was executed from a valid application directory
[ERR]		Unable to locate 'app.dir' config property from sencha.cfg

Any ideas on how to work on a resolution will be greatly appreciated!