Gary,
Thanks for the information. So far, we’ve been unable to replicate your problem or to determine what might have caused it. From the messages, it seems that there might be some corruption of your MyEclipse configuration but this is difficult to pin down. Had you tried any of the previous updates (to 10.1 or 10.5)?
To get you up to 10.6, it might be best to download the installer from here:
http://www.myeclipseide.com/module-htmlpages-display-pid-4.html
Just accept the license agreement and click on the appropriate download link for your system. You’ll be taken to a page that gives further installation options.
You can install 10.6 beside your current installation or choose to upgrade an existing installation (that option will be shown during installation, though, if the upgrade fails in the same way as in the opening post, please try a separate installation).
Please let us know if this helps.