i have just downloaded the plugin and installed it, and it says this "Permission vanish.allow doesnt exist"

Please see the plugin page and existing threads.

i have looked, but cant see anything, more help would be great. i downloaded the lastest plugin but still doesnt work

Are you sure you are using the latest version? Have you opened the file to verify? Did you check your oxide/logs for errors and verify it was loaded succesfully?

ive just checked the json file it created under config and its not a valid json, could that be the issue?

where do i find the oxide logs, never had a problem with plugins till now

oxide/logs

ok think i found it and it says this 
21:15 [Warning] [Heli Ride] Vanish plugin not found. Player will be visable and UseAutoVanish will be turned off

That would imply that the plugin isn't loaded, but that isn't from this plugin. What you are looking for is any errors or indication that this plugin was installed in the right location.

its created a config file which normally means its installed, i checked whats in the json file with a json validator and it says it isnt vaild

thats whats its put in the json

The plugin is not the config file. The config file is created automatically when the plugin is actually loaded.

ok, i can see it in the plugin page, and after i reload the plugins via the server it makes that config file, were am i going wrong.

Merged post

ive just installed 3 other plugins which all work fine, just your doenst want to work

I'm not the maintainer of the plugin, but I see no issues when loading it.

Hi Andy, 
Can you delete the config file and then reload the plugin. Make sure you are using the latest version. Then copy and paste a copy of your config here for me to double check. Also while your server is running use the command "plugins" and also paste a copy of the output here.