Binary package hint: file-roller

Duplicated on two different systems:
- Ubuntu 9.10 on AMD64 using file-roller 2.28.1-0ubuntu1 and p7zip 9.04~dfsg.1-1
- Ubuntu10.04 on i386 using file-roller 2.30.0-0ubuntu1 and p7zip 9.04~dfsg.1-1

To reproduce bug on a File:
- Right-click any file, select compress... from the menu.
- Select .7z for compression type
- Expand Other Options and enter password
- Click Create

Expected result:
- Create an encrypted .7z archive in the same folder as the source file.

Actual result:
- Window pops up titled: An error occurred while adding files to the archive.
- Expanding Command Line Output gives

  Error:
  Incorrect command line

- Click OK to dismiss error window
- No file is created

To reproduce bug on a Folder:
- Right-click any folder, select compress... from the menu.
- Select .7z for compression type
- Expand Other Options and enter password
- Click Create

Expected result:
- Create an encrypted .7z archive in the same folder as the source folder.

Actual result:
- An untitled window pops up
- Contents of window:

   An error occurred while adding files to the archive.

- Click OK to dismiss error window
- No file is created

Forwarding from Ubuntu:
https://bugs.launchpad.net/file-roller/+bug/557345

The problem only happens when p7zip is installed but not p7zip-full.