I started using MySQL 5.0.0-alpha-nt with SQLyog 3.63 and everything was working fine with the exception that I couldn't log in (with SQLyog) using any other account besides root. I was able to run queries, update tables, import/export information, add/remove user and tables, etc.
I found a fix for the problem I was having with the logins by downloading “SQLyog364e.exe” from webyog.com. Since then, everytime I click on the “Alter Table Structure” button I get an application error with the following information:
“SQLyog has encountered a problem and needs to close. We are sorry for the inconvenience.”