I'd remove what you've installed from synaptic. In terminal run
sudo apt-get remove fritzing
Then extract that tarball. Go to download folder, then extract, change folder, then run.
cd ~/Downloads
tar -xzf fritzing-0.9.3b.linux.AMD64.tar.bz2
cd fritzing-0.9.3b.linux.AMD64
./Fritzing
That should start version 0.9.3b
