Please describe the problem:
Nautilus relies on varies tools installed in the system to do the various
archiving operations. e.g tar,untar,zip,unzip,rar,unrar...etc.

But not all of the tools come installed in every machine. (I guess this wasn't
the case in the machines of the coders/testers).

So when a tool is missing say 'rar' is not in my system and I try to create a
.rar file using 'create archive' ; nautilus says/does nothing.

Steps to reproduce:
1. make sure you DON'T have rar installed in your system.
2. right click a file in nautilus and click 'Create Archive..'
3. Give the file name as filename.rar and click 'Create..'


Actual results:
Nothing happens

Expected results:
An error message saying that nautilus depends on such and such tool for this
operation (which is not installed). It can then give an option for creating
archives in 'available' alternate formats. Or take steps towards installing the
missing tool (e.g launching synaptic/apt-get in debian)

Does this happen every time?
Yes

Other information: