[KayJayX]

I am getting

PHP Code:

FATAL: The task you wish to perform requires that a JSON-RPC server with
       version 6 or above of the XBMC JSON-RPC API is provided.

       The JSON-RPC API version of the connected server is: 0 (0 means unknown)

       Check settings in properties file texturecache.cfg 


on my OpenElec Kodi 14.2.

Issuing [myhost]/jsonrpc returns

PHP Code:

{
    "description": "JSON-RPC API of XBMC",
    "id": "http://xbmc.org/jsonrpc/ServiceDescription.json",
    "version": "6.21.2"
} 


so the RPC is up and running.

Can it have anything to do with the fact that I am using several user profiles on Kodi?

Edit: Sometimes just asking the question will lead you to a solution. I realized I haven't tried running the script while being logged into a profile, so I did and it worked.