Was just giving an example to find out if your filename+extension and directory names have no typos. Because that also will result in the port not showing up in the editor.
Of course you could try an official uninstall, then remove remaining directories by hadn, then do official install, then patch to 1.4b.
A fresh and clean install never hurts
Or send the the ME directory + ME execute. So I can test it. Then we know if the files are broken or you have a incorrect system setup.