Decrypting/Extracting CryEngine Game PAK files

[HolySloth]

I'm trying to get access to a game called War of Right's PAK files. It's built on CryEngine so I figured I'd just use the Crysis script. I've got the RSA key in this format:

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0x30, 0x81, 0x89, 0x02, 0x81, 0x81, 0x00, 0xC0, 0x64, 0x7A, 0x3B, 0xE9, 0xD6, 0x26, 0x97, 0x7B,
0x97, 0x4C, 0x84, 0x6A, 0xC5, 0x61, 0x92, 0x2A, 0x2C, 0x8E, 0xCF, 0xB3, 0x14, 0x41, 0x9C, 0xC1,
0xBE, 0xE2, 0x0F, 0x10, 0xED, 0x2C, 0x0C, 0xE2, 0x1D, 0x1C, 0x6D, 0xB9, 0xEE, 0x9A, 0x96, 0x48,
0x4E, 0x85, 0x2B, 0x0D, 0x28, 0xBF, 0x05, 0x93, 0xDF, 0xA1, 0x95, 0x01, 0xB0, 0x92, 0xA0, 0x16,
0x91, 0x07, 0xF2, 0x99, 0x82, 0x7E, 0x0E, 0x5B, 0x10, 0xF4, 0x38, 0xDA, 0xDA, 0x0F, 0x8A, 0xB5,
0xD1, 0x47, 0xEE, 0x10, 0xAB, 0x2B, 0x45, 0x4F, 0xCE, 0x51, 0xC7, 0x30, 0x3E, 0xD5, 0x13, 0x1C,
0xA4, 0x7F, 0xF1, 0xBE, 0x25, 0xD7, 0x18, 0x78, 0xCF, 0xF0, 0xF7, 0x75, 0xCE, 0xC8, 0xE3, 0x54,
0x55, 0xC6, 0x97, 0x21, 0x56, 0xA1, 0xFB, 0xB5, 0xD5, 0xB3, 0x55, 0xB8, 0xBF, 0x2B, 0x04, 0xA0,
0x8B, 0x6B, 0x4B, 0x96, 0x0D, 0x2F, 0xB9, 0x02, 0x03, 0x01, 0x00, 0x01

So I was wondering how I should change the crysis2.bms file in order to have it work for War of Rights.

Update: So I tried adding the War of Rights RSA key in the format I saw in the crysis2.bms file where the "retail" key was previously. I then ran it on a file called: Objects_Revolvers.pak, I then got the attached error.