Strange problem with Amibroker!

So, I have been using Amibroker Professional Edition 6.0.2 Crack for some days and I was able to save database and everything but for the last 2 days, it's showing "unregistered version, doesn't save changes". Right now, I am not in a position to buy it. Does anybody know any fix for this?

Any help would be much appreciated!
Thanks!

Strange problem with Amibroker!