these links are my research on how i got my ReactPSN 2 work. - hope they help u.
now if ur on Rebug u should have no issues getting it work accuse the VSH is already patched 2 allow false activation of DLC and other stuff.
now a few tip sometime it does not like .rif files if they belong 2 u get the act.dat from the account u purchased those DLC/Game content that goes with the Rif File and use rif2rap converter by black-diamond i think + get ur PSID written down somewhere - u can view it with Multiman.
or once u run react PSN and makes a exdata folder in the account that has been renamed from aa - put all rif files in there and then rename the folder back 2 aa and re-run it. u always run react psn from the aa account - not ur main - only follow these tips after u read all the TUT's
i think it is L1 or R1 or just hold both 2 back up ur exdata folders 1st then u just run it again and hold nothing and it should rename the account aa 2 reactPSN with the amount of files activated + reboot ur PS3 automatically. some times it stays black from like 10-20 min don't freak out it normal depends how many activation files u have.