Regarding my comment above, I tried Benjamin's suggestion to install eclipse-plugin-cvs, which led me to learn that I also needed to install these packages via apt-get too:
eclipse-jdt
eclipse-pde
Then new software installation worked! Thanks for the suggestion.
Regarding my comment above, I tried Benjamin's suggestion to install eclipse-plugin-cvs, which led me to learn that I also needed to install these packages via apt-get too:
eclipse-jdt
eclipse-pde
Then new software installation worked! Thanks for the suggestion.