After Effects error : layer does not have a source.

Hi All,

          I add a Text layer and then add my custom fill  effect to it. Then I call AdvItemSuite1()->PF_ForceRerender(in_data, &(params[0]->u.ld)) from AEGP for all the layers. But only for Text layer, AE pops up a dialog displaying the following error :

After Effects error : layer does not have a source.

(26::335)

Why is this happening? What other call can I use to rerender all the layers?

Thanks & Regards,

Dheeraj