Linux RC - Help

[Emera]

I have been trying this all day, and am still unsure as to what the issue is. I am hoping that you experienced users can help me with this. Since I can't post on the Graal forums since my gold has ran dry, I don't quit know what to do. I am trying to install the RC client via terminal commands. All seems to be going well until I get this error when doing the chmod.

error while loading shared libraries: libgtksourceview-1.0.so.0

I am trying to install the "missing" package via the terminal install command by doing this;

sudo apt-get install libgtksourceview1.0-0

However, doing this results in this error;

Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package libgtksourceview1.0-0
E: Couldn't find any package by regex 'libgtksourceview1.0-0'

Can anybody help out?