I installed the latest version (13.0.9529) of Dialux on a new (more powerfull) Desktop PC, I opened a file made on a previous version (12.1.7275) on my older laptop pc.. it opens fine but when I want to save it, that is without altering the file whatsoever, the saving process remains stuck at around 20% and program stops responding. I also tried to recalcolate first and then save, same problem. I tried to save with a different name, same problem. Is there any solution for this problem?