This bug has already been reported and will be fixed in the next update. It's an unintended consequence of having the ALWAYS_FACE_PLAYER set to false in the Following Pokemon settings. If you urgently need to fix this then just set that value to true.
Did you skip step 1 of the installation instructions by any chance? The plugin installation involves replacing your CommonEvents.rxdata, and if you skip step 1, RMXP overwrites the changed data files with default data and you lose the changes. This will make Following Pokemon un-interactable.
It's a minor typo. Look for super(viewport, spritehash) and remove the , spritehash from it. Also it'd be appreciated if you don't directly ping when you discover a bug. We actively check the forums so we'll definitely come to know if an issue has been reported.
Had a quick glance at the script and looks like all that needs to be changed is that pbGetTerrainTag(event) becomes $game_map.terrain_tag(event.x,event.y). I'm not a 100% sure though.
Added a toggle to prevent followers from always changing their direction, to closely mimic HGSS.
Added an option to add a key to cycle through the player's Party Pokemon in the overworld.
Rearranged almost all the scripts to make it easier to edit and keep track of changes.
Made the rate of...
Since it's only a calculation change and not a change in the actual values, your IV screen will not display 31 IVs. You can maybe change the grade system to show an S rank when the Pokemon is Hyper Trained.
It doesn't matter, just get the fixes like you have been asked to do. If you have the GitHub version, then you won't notice any change. Since the script is made for base v19.1 first and foremost, and dependent events have bugs in base v19.1, the script requires the hotfixes to be installed. I...
This is just a bug with Dependent Events in general, and not something I can fix unfortunately. Later versions of Essentials are slated to fix this, so keep an eye out.
So get the v19.1 Hotfixes then.
You still haven't made the 26 animations you promised you would when you requested this feature on Pokécommunity. I'll definitely add them once you provide graphics for them.