This happens on a couple of songs now every time I open them, and when I insert or remove plugins. G5 Dual 2 PTHD3, 192 interface Songs at 48k 24 bit. OS 10.4.11 Logic 8 Any ideas? It doesn't seem to be causing a real problem (the action I start is always completed successfully, after I remove the Error message). It's just "worrisome".