Since half of july I saw a problem using FX in al my Vegas versions.
After applying a FX there was no change in my preview.
But after closing the FX Window suddenly the effect appears in preview.
For me strange behaviour.
Installed was/were 384.76-notebook-win10-64bit-international-whql and to see if there was a fix later the 384.94-notebook-win10-64bit-international-whql.
Both had that strange behaviour.
Installing the older 381.89-notebook-win10-64bit-international-whql restored everything.
Am I the only one?