qt app support problem on nokia e series

Question

I have developed a qt app with which uses mobility and phonon.

Qt version is 4.6.3 and Mobility is 1.0.2

Now when i install the smart-installer package on a s60v5 device, It installs correctly and runs also well. But when I try to install it on a E series phone like E63 i gets installed. But when tried to run it, i get a message 'feature not supported' and app doesn't start at all.

Any pointers?