BlackBerry Application compatibility wiht smartphone and normal phone

I am new to BB development.recently i have developed a simple application using JDE eclipse plugin ( Blackberry JRE 5.0.0.0 ). I have tested this simple application on default simulator i.e. BlackBerry Simulator 9550 , a smartphone simulator.

But when i have tried to test this same application on other simulators i.e. 8520,8900,9630,9700 ( s开发者_JS百科imulators only with keypads, no touchscreen support ),My application just hanged.

Since i am new to the BB development world , any help on how to make my application backward compatible with non touch screen device ,is appreciated..

faithfully Dharmesh

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Solved .

it was a JDE compatibility error. changing a version of JDE has solved my probelm