Errors: XMaster file is damaged

My CPU overheated and the MetaStock files that I was working on were damaged when the computer shut itself off. Once I got the computer back up, I copied the charts in my active trade’s folder to a safe location, then reinserted the MetaStock Data CD. Once Installshield started I had an option to repair the data files. That worked. After updating the symbols again and d/l'ing the current data I'm back up.