packages: local objects only for developer himself?

Hi there,

I developed a program that uses a proxy to communicate with SAP XI.

For the input data I created a dynpro.

If I call this dynpro with my credentials everything works fine. Another user

received a dump while trying to send data.

I created all these objects (proxy, abap program, dynpro) in the local package

$tmp. Is this the reason the dump appears? I thought $tmp is like a normal package

but not transportable to other systems.

The dump says that the reference to the proxy classes is null.

Do I have to create a usual package that other user can access my objects?

thx

chris