Eclipse opens blank workspace

Question

I have this weird issue where the following happens:

• fresh eclipse juno install (with all updates applied)
• works fine for a while asking which workspa

Answer 1

I solved this problem as per JJ-za's answer, except steps 2 and 3:

2. In {eclipse_dir}/configuration/.settings open the file org.eclipse.ui.ide.prefs (when Eclipse is not running)

3. Find the line RECENT_WORKSPACES= and confirm that the workspace is pointing to the correct workspace directory and that multiple workspaces are separated by \n