Mac OSX - USBtiny is violating Section 9.3.5 of the USB Spec

[nab]

Update:
Added information required by the "How to get help!" post.

I have been using my usbtiny V1.0 for a long time and it has always been unreliable, but today I thought I would turn to the forums since google was no help.

The problem:
Usbtiny only works sometimes and unplugging then replugging fixes the problems occasionally. Sometimes it doesn't work at all until some combination of factors on my system align. I have tried with multiple boards so I don't think it is a hardware problem.

Error messages:
Output from USB Prober:

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Timestamp Lvl     Message
--------- ---   --------------------------------------
    6.258 [1]   [0x4603800] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in.  It will keep retrying.  (Port 1 of Hub at 0x4000000)
    6.713 [1]   [0x4603800] The IOUSBFamily has successfully enumerated the device.
    6.754 [1]   USB Device USBtiny is violating Section 9.3.5 of the USB Specification -- Error in GetConfigDescriptor( wLength = 4)


Output from dmesg after plugging the device in:

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com_apple_driver_AppleUSBCardReaderUMC:: Stop::Controller Reset
USBMSC Identifier (non-unique): 000000009833 0x5ac 0x8403 0x9833


Output from avrdude when programming fails immediately after plugging in

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Reading | ################################################## | 100% 0.01s

avrdude: Device signature = 0x1e0000
avrdude: Expected signature for ATMEGA328P is 1E 95 0F
         Double check chip, or use -F to override this check.


Output from avrdude after the first failed attemps. Seems like at this point osx gives up trying to read the usb device (See below).

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avrdude: initialization failed, rc=-1
         Double check connections and try again, or use -F to override
         this check.


Setup:
Usbtiny version 1.0 - Kit from adafruit
Picture of the front
http://flic.kr/p/8VG82C
Picture of the back
http://flic.kr/p/8VG6Km

Macbook details

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  Model Name:   MacBook Pro
  Version 10.6.5
  Model Identifier:   MacBookPro5,5
  Processor Name:   Intel Core 2 Duo
  Processor Speed:   2.26 GHz
  Number Of Processors:   1
  Total Number Of Cores:   2
  L2 Cache:   3 MB
  Memory:   2 GB
  Bus Speed:   1.07 GHz


avrdude -v

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avrdude: Version 5.8, compiled on Dec 22 2009 at 16:02:42


Thanks in advance.

[adafruit]

we fixed a few things since v1.0 which could be the problem
you could try programming a new chip
viewtopic.php?f=20&t=17191

[nab]

I tried v1.04 and v2.0 (wasn't sure if it was compatible with my 1.0 hardware) from http://www.ladyada.net/make/usbtinyisp/download.html and v1.6 from http://www.xs4all.nl/~dicks/avr/usbtiny/.

They all remove the error "USB Device USBtiny is violating Section 9.3.5 of the USB Specification", but the error in dmesg is still there each time I program.

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com_apple_driver_AppleUSBCardReaderUMC:: Stop::Controller Reset
USBMSC Identifier (non-unique): 000000009833 0x5ac 0x8403 0x9833


However, it does seem more reliable with the version from http://www.xs4all.nl/~dicks/avr/usbtiny/. I have programed at least 10 times without having to plug and unplug.

Thanks for the help