mangelo123 ,
Sorry that you are seeing this issue with MyEclipse.
Can you answer some more questions for me to understand the issue better ?
1) Can you share your Build Id from Help > MyEclipse Enterprise Workbench > Build Id ? Paste the Build Id here.
2) Can you explain me what are the steps you are following after clicking on ‘Profile As’.
3) Are you using the default Sandbox Tomcat provided by MyEclipse or have you configured any external Tomcat server?