Installing some eclipse plugins requires different steps depending on the version of eclipse.
What version of eclipse is rhostudio for MotorolaRhoMobileSuite188.8.131.52 built upon?
All references to eclipse are removed in the help "about" menu.
Rho studio 2.2 (184.108.40.206) and 2.2sp1 (220.127.116.11) are built upon eclipse indigo 3.7.
You can install platform tools from http://download.eclipse.org/eclipse/updates/3.7
and the market place from http://download.eclipse.org/releases/indigo
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