ERROR with programer

Hello everyone, i have trouble with programing of my EP3C16Q240, i have my own board (schematic is in attached PDF). If i use USB blaster, quartus 9.0 says this:

Info: Started Programmer operation at Fri Dec 11 12:59:16 2009

Info: Configuring device index 1

Info: Device 1 contains JTAG ID code 0x020F20DD

Error: CONF_DONE pin failed to go high in device 1

Error: Operation failed

Info: Ended Programmer operation at Fri Dec 11 12:59:17 2009

but programing never start. If i use ByteBlasterII, everything is ok, i can programing my board. ConfDone goes up at the end. But i need USB blaster, because i wanna use Nios II.

Please, what is wrong, do you have any idea?

Thank you very much for your advice.

Vaclav