Hello! I have a problem with the error message 'CHOLDC Failed'. I developed a small software for automatic change detection. I compiled it and started distributing the .sav file to run with the IDL VM. The code works perfectly fine on my machine and some other machines I checked on. But every now and then some of my colleagues report that its not working on their machines. Initially, I thought it might be a Floating point problem. I used !Except=0 but this doesn't help. Any clues on this problem? I understand this is something related to hardware but I have no knowledge of these issues. Best regards, Prashanth