Coredraw not responding when opening files send from other machines

I have a iMac and MacBook, files made on one of them can't open on the other. When i try opening files send from the other or from someone else the process coreldraw stops responding. Corel support suggested deleting the .plist files of coreldraw and font manager, then reseting their settings then opening a new file draw rectangle close the file open again add text close the file. That fixes it but only for that time, the next time i recive a file it happens again. I cant do it every time does someone have a solution.