multiple versions of maxima



A friend has forwarded this problem to me. Can you help him?

I've defined some parameter-dependent variables. When I integrate 
expressions with these variables, the dependency is not recognized, see 
example below. This problem appears in particular when solving ordinary 
diff. eqs. with ode2(). Am I doing anything wrong here?

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wxMaxima 0.7.6 http://wxmaxima.sourceforge.net
Maxima 5.16.3 http://maxima.sourceforge.net

(%i1) depends([J,omega,phi],t);
(%o1) [ J(t), ?(t), ?(t)]
(%i2) phi:
                integrate(omega*J,t);
(%o2) ? t J
(%i3)