Using CDex, when making a mp3 file into wav-file format I expirience noise cracks and end of the track as it end's. Viewed it with Nero Wave Editior a saw that there was cracky lines that shouldn't be there. Also compared it with the mp3 file and the mp3 file did't have this lines
Although i cant think of a reason why decompressing a file to wav would give any corresponding software a hard time, maybe it would be wise to try another application for doing so, like EAC.
dBpowerAMP Music Converter does a good job.