That's really great, thank you. It's Ubuntu 14.04 LTS - fairly vanilla install. Not much that could conflict with it.
That's essentially what we develop on and have already have a VM for it.
Can you try running from the command line?
Just navigate to the unzipped archive in a terminal and issue this:
./Stealth\ Qt
Then post your output.
In the terminal, I navigated to the folder where the contents of the zip file were unzipped, labelled 'Stealth-Qt-1.2.0.1-Linux$' - I typed:
./Stealth\ Qt
Terminal returned:
./Stealth Qt: error while loading shared libraries: libqrencode.so.3: cannot open shared object file: No such file or directory
'libqrencode.so.3' is definitely in the folder.
Am I being a moron? It's perfectly possible.