I’ve been observing this problem since v8 of SQL Yog. That’s also when I started using Windows 7 after previously being on XP.
It doesn’t always crash, just sometimes. Also noticed that the tables are normally copied in alpha order, but now it often starts with the last table, then goes back to the start. I don’t know if this is related to the bug/crash.
I use this function frequently, so I can do dev testing with the latest data for various websites, so it’s important. Just now took 3 attempts, each one crashed SQLyog before it finally worked.