Can you try to reinstall RhoStudio 32 bit and make sure that you click all components in selected component box while installing rhostudio.
Thanks for the suggestion. I tried already the same, re-installing and all the components are selected. But still the same issue.
So I have installed JDK 1.6 64 bit version, Rhostudio is opened in 64 bit mode, now I can see the Rhomobile application.