I'm guessing that you mean, "Why can't you install anny additional Services in to the myrobotlab?"
You right click and select install, what happens?

Send me a log file...
After you right-click and select install...
This is simple to do - just select from the menu - Help -> About -> "GroG it no-worky" button.

I see you sent 2 logs,

The root cause is this exception :

java.lang.NoClassDefFoundError: org/apache/commons/codec/DecoderException

It's trying to get additional services, but can't because it can't find apache decoder.  I tested this on a Fedora Linux 32 system - and it worked, but for some reason it's trying to decode.  

You can possibly fix this by downloading the apache codec jar
http://myrobotlab.googlecode.com/svn/trunk/myrobotlab/thirdParty/repo/o…;

and putting it in

/home/mob/robolab/myrobotlab.1049M.20130208.0706/libraries/jar/

let me know if this helps.