FT2232H in Sync FIFO Mode - TXE# stuck high

Here's some of the code I used to configure channel A for sync fifo mode. Maybe something will stand out.

UCHAR Mask_A = 0xff; // all outputs

UCHAR Mode_A = 0x40; // high speed synchronous fifo

UCHAR Reset_Mode = 0x00;

UCHAR LatencyTimer = 2;

// connect with Channel A and set Mode

ftStatus = FT_Open(device_number_a, &FTDIHandle_A);

FT_SetBitMode(FTDIHandle_A, 0xff,Reset_Mode);

Delay(.01);

FT_SetBitMode(FTDIHandle_A, Mask_A,Mode_A);

FT_SetLatencyTimer(FTDIHandle_A, LatencyTimer);

FT_SetUSBParameters(FTDIHandle_A,65536,65536);

FT_SetFlowControl(FTDIHandle_A,FT_FLOW_RTS_CTS,0x00,0x00);

FT_SetTimeouts(FTDIHandle_A, 5000, 5000);