Creates unplayable Apple Lossless from Flac! !!

The app looks great but it ruined my music collection. I converted my Flac files to Apple Lossless. Many files are now unplayable. I noticted this problem some time after deleting the input files. It would be a great app, if it only had worked. There was no indication of any problem with the conversion. Now I have to recreate my whole music collection!!!

Imunai about Music Converter Pro, v1.5.1