Hi Kevin,
What version of KDE were they written for? If they were written for
4.1,
they need to be ported, 4.2's libplasma has API changes (this should be the
last time, from now on libplasma should be backwards source and binary
compatible).
I was pretty sure that there was no API changed in plasma was planed for
KDE 4.2, nor did I notice any mail on the lists. However this should
explain why it doesn't work. Thanks for the fast answer.
Best regards,
Florian