Thanks a bunch Planck
The second one worked just fine
I edited the line which formally read as:
proxy:My_ProxyName.01
which made OFP try to find the proxy in the data3d folder (where all the other proxys are) to:
proxy:\MyAddonFolder\My_ProxyName.01
which made OFP take the proxy from my addons folder.
Thanks again Planck :thumbsup: