It's not possible that an old installer would make any difference to your problem, since they all downloads the same files from the internet when they start.
Maybe it was just the reinstall which must have cleaned some files. The installer will also re-arrange the loading order of the modules, placing our modules first so, if another addon caused a key conflict, the re-arrangement made by the installer fixed this, but it would happen with any of the installers.
Uninstall the old version and install the current one.