I'm using the transformer call PARTICLES. Now; in version 2.5.8 when I change the media source of the particles, the layer desappear in the output but appear correctly on the preview window. I found that this bug appears when I'm using any "PIXEL FX" and "PARTICLES TRANSFORMER" simultaneously on the same layer.
Also If I use the "LUMA KEY" on particles and I change the media in the output appear a white rectangle as particle source BUT in the preview appear the correct image I'm trying to get.
The temporary solution I found is turning off/on the "PARTICLES TRANSFORMER",on this way the layer reappear on the output screen in the correct way. I went back to version 2.5.6 to evade this bug when I need to work with particles and change its media in realtime.
I'm Using: MacBook Pro 17, 2.16Ghz Core Duo, 2GB Ram, MacOSX 10.4.11, Modul8 2.5.8.