Make sure you have installed the clients in 2 separate folders as instructed in the guide. If you didn't you have to reinstall because that would mean your installation overwrote your current installation and messed it up.
If you did follow the guide, you should see 2 different shortcuts on your desktop. If one of the shortcuts are not appearing, go to the respective folder and make a shortcut.
You MIGHT be able to use a recoliser to fix things faster but thats a temp "band-aid" thing because relocalisers are notorious for having issues especially when new patches are released. Having 2 perfectly working clients installed in separate directories means no problems ever again in the future.
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