crc check failed ubnt

[Peregian]

I'm trying to put 2 lines of code in a startup script for a ubiquiti router and all the extraction and recompile say successful but I get a rootfs crc check failed on update.
Looking at the install differences between the modded firmware and the original firmware I can see a Plen: 0 on the modded and a Plen: 0x00660000 on the original. Anyone with any ideas how to fix this? log below.

BZ.v2.2.3# fwupdate.real -m new-firmware.bin -d
Found mtd block: /dev/mtd0(u-boot)
Found mtd block: /dev/mtd1(u-boot-env)
Found mtd block: /dev/mtd2(kernel)
Found mtd block: /dev/mtd3(rootfs)
Found mtd block: /dev/mtd4(cfg)
Found mtd block: /dev/mtd5(EEPROM)
Got U-Boot variable: mtdparts = mtdparts=mtdparts=ar7240-nor0:256k(u-boot),64k(u-boot-env),1024k(kernel),6528k(rootfs),256k(cfg),64k(EEPROM)
Adding U-Boot partition: u-boot 9F000000 00040000
Adding U-Boot partition: u-boot-env 9F040000 00010000
Adding U-Boot partition: kernel 9F050000 00100000
Adding U-Boot partition: rootfs 9F150000 00660000
Adding U-Boot partition: cfg 9F7B0000 00040000
Adding U-Boot partition: EEPROM 9F7F0000 00010000
Calculating flash size:
Adding block: /dev/mtd0("u-boot") - size: 00040000
Adding block: /dev/mtd1("u-boot-env") - size: 00010000
Adding block: /dev/mtd2("kernel") - size: 00100000
Adding block: /dev/mtd3("rootfs") - size: 00660000
Adding block: /dev/mtd4("cfg") - size: 00040000
Adding block: /dev/mtd5("EEPROM") - size: 00010000
Total flash size: 00800000
Flash start: 9F000000
Flash end: 9F800000
Header MAGIC 'UBNT'
Current: BZ.ar7240.v2.2.3.1055.120112.0726

New ver: BZ.ar7240.v2.2.3.1055.120112.0726
FW Part: "kernel"(1), MAGIC: 'PART', Base: 0x9F050000, DLen: 0x000B2453, PLen: 0
FW Part: "rootfs"(2), MAGIC: 'PART', Base: 0x9F150000, DLen: 0x00420000, PLen: 0
FW Image partition "rootfs"(2) crc check failed.


BZ.v2.2.3# fwupdate.real -m firmware.bin -d
Found mtd block: /dev/mtd0(u-boot)
Found mtd block: /dev/mtd1(u-boot-env)
Found mtd block: /dev/mtd2(kernel)
Found mtd block: /dev/mtd3(rootfs)
Found mtd block: /dev/mtd4(cfg)
Found mtd block: /dev/mtd5(EEPROM)
Got U-Boot variable: mtdparts = mtdparts=mtdparts=ar7240-nor0:256k(u-boot),64k(u-boot-env),1024k(kernel),6528k(rootfs),256k(cfg),64k(EEPROM)
Adding U-Boot partition: u-boot 9F000000 00040000
Adding U-Boot partition: u-boot-env 9F040000 00010000
Adding U-Boot partition: kernel 9F050000 00100000
Adding U-Boot partition: rootfs 9F150000 00660000
Adding U-Boot partition: cfg 9F7B0000 00040000
Adding U-Boot partition: EEPROM 9F7F0000 00010000
Calculating flash size:
Adding block: /dev/mtd0("u-boot") - size: 00040000
Adding block: /dev/mtd1("u-boot-env") - size: 00010000
Adding block: /dev/mtd2("kernel") - size: 00100000
Adding block: /dev/mtd3("rootfs") - size: 00660000
Adding block: /dev/mtd4("cfg") - size: 00040000
Adding block: /dev/mtd5("EEPROM") - size: 00010000
Total flash size: 00800000
Flash start: 9F000000
Flash end: 9F800000
Header MAGIC 'UBNT'
Current: BZ.ar7240.v2.2.3.1055.120112.0726

New ver: BZ.ar7240.v2.2.3.1055.120112.0726
FW Part: "kernel"(1), MAGIC: 'PART', Base: 0x9F050000, DLen: 0x000B2453, PLen: 0x00100000
FW Part: "rootfs"(2), MAGIC: 'PART', Base: 0x9F150000, DLen: 0x00420000, PLen: 0x00660000
Adding adjusted FW partition:

[Jeremy Collake]

Please post to FMK Google Code site.