What is a dynamic lybrary PXdll?

I am not real clever and having trouble myself with my Sony Recovery centre program on my laptop.I get an error message that tells me that it cant load because the PX dll is missing.

I assume it is part of the Dynamic Link Library that has something to do with the backup or restore function, not a lot of help, but thought it might at least give you a clue.

I am off to the Sony website to see if I can find a PX dll let you know what I find.