Bill,
Glad that it works.Thank you for getting back to us.The -clean argument is a one-time use flag which reevaluates the plugins. After you have run MyEclipse with it and the problem is fixed, you can remove it until you need it again. Your MyEclipse installation will work even without it. The -clean is recommended if you install new plugins manually or remove unused plugins.
Thanks again for the time you spent debugging this issue with us, much appreciated.
–Swapna
MyEclipse Support