A: 

Sounds like a bug somewhere. This could be specific to your OS or environment.

  1. Start by checking the Error Log view (to show it, use the Window -> Show View option. See if you are getting any exceptions there.
  2. To eliminate workspace issues: Try with a new workspace (simply switch to a new workspace, you can always switch back later).
  3. To eliminate issues with your specific installation: Try with a clean Eclipse install. You can download a new installation from eclipse.org and install it in a different directory.
  4. Search for existing bugs in Eclipse Bugzilla. If there are none, report yours. Attaching your configuration to the bug report might help (under About Eclipse -> Installation Details -> Configuration, copy and save to a text file).
zvikico
The first time I used the Install Software Screen, the plugins were showing until I got the error above (see updated post).
Jeune
already tried #3, didn't fix the problem. :(
Jeune
+1  A: 

Try installing the Eclipse package from Synaptic; it's been updated to the latest version just recently (though you may need to enable more recent updates from the Software Sources dialog or something).

Makes sure you install version 3.5.1-0ubuntu7 or later from Synaptic. I'm not in Ubuntu right now to check, but this bug has been fixed in that version and later. See this bug report.

If for some reason you can't do that, then do the workaround here.

Ricket
I am actually very very very new to Linux, I just installed Linux Mint on my laptop and well I dont' how to install "from Synaptic". Can you give me a link? Thanks. :D
Jeune
Under System, Administration, the Synaptic Package Manager. Use the search button on the toolbar to search for eclipse, and then install the eclipse package. I think you'll catch on quickly; the package manager is pretty much the best part of Linux (compared to Windows)
Ricket
Hi synaptic is saying that the latest version is 3.5.1-0ubuntu3 so I installed this anyway but obviously the bug is still there. I can't seem to find 3.5.1-0ubuntu7.
Jeune