The error messages are fairly well known and the cause are bugs in the application. The bug was not cured in the version you have because it does happen rarely rather than all the time to everyone.
I can't share anymore since you didn't tell what version of draw or supply the exact message. But you shared enough that I can tell you that it is a known issue and documented at the corel support site.
I have got AMD Athlong XP 3200 with Asus motherboard and 1 GB RAM on it. I use Windows XP-2. The problem i face is sometimes Corel Draw wont save the file and displays an error message saying temp file or destination full. The temp file and destination file got so much space though. Plz let me know if anyone has a clue why it hapens so.