Error when decrypting ISO in 3k3y ISO Tools

Hi everyone,

I get the following error message when I try to decrypt an ISO in 3k3y ISO Tools:

Code:

System.OverflowException: Array dimensions exceeded supported range. at IsoTools.IsoCryptoClass.AnalyseISO(String fileName)

Failed, invalid ISO D:\PS3 ISOs\Naruto Shippuden Ultimate Ninja Storm 2.iso

I've tried with multiple ISOs but still get the same message. I was following the quick start guide.