Getting some "profile can't be used, NW.js not up to date. specifiy another directory or adopt a more recent version of NW.js" message?
This usually hapenned when you are play several rpgmv games with different version of nwjs.
In the game folder there's a file with name "package.json", if you open it using text editor, there's a field with "name" : "..."
eg: "name" : "KADOKAWA/RPGMV" or sometimes blank ("name" : "")
If "name" is not blank nwjs will create folder with the same name in user local application data folder for storing data files.
for example : "c:\users\<username>\appdata\local\KADOKAWA\RPGMV"
If "name" is blank the folder will be : "c:\users\<username>\appdata\local\user data"
If two game with different nwjs but with the same name in "package.json", then the one with older nwjs tend to have problem, because sometimes newer nwjs incompatible with older version
There's two solution for this:
1: Delete the nwjs user data
If you confused how to found the user local application data, just navigate in windows explorer, change folder to %LOCALAPPDATA%, this will change folder to user local application data folder, then find the folder with game name mention above, delete the folder
2: Change the game name in package.json
With this different game will used different folder for nwjs user data, just open the package.json using text editor then change the name field
eg : "name" : "KADOKAWA/RPGMV" -> "name" : "RPGMV/gamename"
Sometimes there's two "package.json" file, one in the game main folder and the other in "www" folder, to avoid more problem if you're editing the game name, edit both file with same name