sims 4 on ha

Hi Yall, 

I'm trying to put my Sims 4 onto an external hard drive, but I have just been running into issues left right and centre, but there are two main problems. The first problem occurs whenever I successfully put the game on the hard drive and create a symlink; it's obviously not so successful because the game won't open. My system says that the game is already running so it can't open, which is impossible because I didn't open it before that. I've uninstalled the game, deleted origin and gone through the process of installation on the hard drive (as per Bluebellflora's website) multiple times but ended up with the same result most of the time. If it's not this issue, then it's a problem with the packs. On the rare occasion that I can open the game, my packs won't download. My system sends a message stating "/Volumes/Luna/The Sims 4 Packs/FP01/ResourceClient.cfg_DiP_STAGED.""--but I honestly have no idea what this means.  

I've been trying to put this game on this hard drive for almost 4 days now, If anyone can help please, please let me know! 

Thanks,