LilyPad Arduino ATmega328 - avrdude: ser_open(): can't set buffers

I was getting a sync error and following a post, I updated my win 7 drivers. The device is set properly (LilyPad Arduino), the processor (Atmega328), and the com port is correct (Com30). When I try to upload a sketch, I get the error:

avrdude: ser_open(): can't set buffers for "\.\COM30"

Anyone offer any advice?

Thanks!