I think I've founded a bug in this app (I know it's free, but I think it's too well done to leave it as is... ;P)
Sometimes the MD5 verification fails even if the hash is correct, in other words it fail to verify.
I've tried this with many others checkers, digestit2004, hashcalc and many others; the only one that fail no checking the md5 hash is flashsfv...
I hope you will solve the problem ASAP.
Thank you for your all great work!
Kind Regards