title: RStudio doesn't work
body: <p>Why RStudio doesn't work after successful installation. When I'm opening RStudio (the up to data version V98.501) I see only a white desktop, the menu fields are completely paralized:<img src="https://i.stack.imgur.com/72Vd4.png" alt="enter image description here"> </p>
  
  <p>The only option is either Reload or Inspect.
  How Can I fix this problem? It occurd when I was trying to switch from R 2.15 to R 3.0.2, getting Tools --> General Options-- > Choose R Version.
  I tried to remove all and install again, it doesn't help at all.</p>