So, giving shorter names to the folders/sub folders did the trick. Thank you!
You're welcome. Keep in mind depending on the naming setup you used, you
may run into issues still. The files for all of the animations aren't in, say, an RPA like Ren'Py. Instead, they are in individual folders as separate files as well, so that will also add to the length of the path. For example, the very first scene with Julia giving you a HJ is:
/Mystwood Manor_Data/StreamingAssets/gamedata/girls/julia/animations/bedroom/3/events/hj/hj.mp4
So that has to be taken into consideration as well in your naming scheme. That's 95 characters right there in that alone (if you take the slashes out, that's 84 characters). Add multiple sub-folders in the mix and you increase the count.
I get it, people want to hide the game so family and friends don't know someone is playing a porn game (I actually had this issue on Discord a while back). But if you limit the sub-folders to at least 2 and keep it short & sweet, you should be okay. But if not, move the game to the root of your hard drive. You can always set the game's folder to "hidden" (right click on the folder, select 'properties', click the box marked 'hidden') if need be.