Keeps crashing, I cannot believe the 5 star ratings, they are probably from friends and family

Keeps crashing. I used it several times and it could not finish even a single scan on my hard drive. then I tried it on an almost empty drive and that worked, but on a normal drive that has my most commonly used files, it just keeps crashing. I cannot believe the 5 star ratings, they are probably from friends and family. This app is pathetic. I asked for a full refund but so far I have not received any

AJ Cinci about Disk Space Analyzer Pro