rxTools: Browser exploit doesn't work; but GW exploit works

Hey there,

I have got an o3DS with 6.2.0-6E firmware and with the Browser (version 1.7455).

Problem: I cannot launch rxTools, it goes to the home menu with the message "An error occured..."


I had to update this o3DS from 3.0.0 with a game (Zelda: A Link Between Worlds).
Any idea?

PS: The Gateway browser exploit works, I get the Gateway menu and I already backed up the sysNAND and created an emuNAND (before that I copied the backup to my PC of course).