Rated 4 out of 5 stars

For those leery of a download, and you experienced problems after following Divsirt's solution, I second Xander's addition which finally fixed it for me!!!!

Follow Divsirt's solution and also follow Xander's additional step:

5. Open the file install.rdf with a text editor and change the line:
<em:maxVersion>4.0.*</em:maxVersion>
to
<em:maxVersion>6.0.*</em:maxVersion>