Sorry for the delay in the answer, i wanted to try this at home to avoid the company network.
I downloaded SMPSDK30 SP10.
Uninstalled the version i had and installed this new one.
I located the Agentry_70.10.0_EditorPlugin_x86_64.zip in the installation folder and used it to try to install.
Again i tried outside company network, full admin rights and with the p2.mirrors=false args. But im still getting the same error. Any idea what else can i try?
Thanks