TL-MR3020 stuck on installation of PirateBox

Hello, I´m from Argentina and I´m trying this excellent proyect on my TL-MR3020.

Last night after read all steps I decide to work on it. First I follow the "Auto Installation" (http://piratebox.cc/openwrt:diy) without problem (I´m using an USB stick Kingstong 1GB)

I success to login with Telnet, change password and then login with SSH. All this without problem.
Then I try to do the "Post- Installation" and I realice that I don´t have the /opt folder .
Also I try to find any related to PirateBox and I can´t find on my TL-MR3020.

What happend? I don´t have any clue.
also, I try another USB stick (Verbatim 16GB) and I have the same result.

On my USB I have the following:

external_fs
install
openwrt-ar71xx-generic-tl-mr3020-v1-squashfs-factory.bin
install.log


Here is the information on install.log
Pastebin Log

Thanks for any help.

Diego