I just downloaded a World of Warcraft patch, and whenever I opened the updater it would instantly close. The icon doesn't even have a chance to appear in the dock, but i see the dock get a bit bigger and the little light that appears underneath the icon flickers. I looked at the contents of the update, and in the "MacOS" folder, the file called Installer, which on other patches is a Unix Executable File, is a Plain Text file. I didn't know if this was the problem, so I took the same file from another patch and replaced the plain text with the unix executable file, and the window appeared, though of course since it was from another patch, it wouldn't update. So how do I convert that plain text file to a unix executable file?