usb problem using 18f4550

unsigned char k;
unsigned char userWR_buffer[64], userRD_buffer[64];

const char *text = "MIKROElektronika Compilers ER \r\n";

//**************************************************************************************************
// Main Interrupt Routine
//**************************************************************************************************
void interrupt()
{
  HID_InterruptProc();

}
//**************************************************************************************************

//**************************************************************************************************
// Initialization Routine
//**************************************************************************************************

void Init_Main()
{
        //--------------------------------------
        // Disable all interrupts
        //--------------------------------------
        INTCON = 0;                             // Disable GIE, PEIE, TMR0IE,INT0IE,RBIE
        INTCON2 = 0xF5;
        INTCON3 = 0xC0;
        RCON.IPEN = 0;                          // Disable Priority Levels on interrupts
        PIE1 = 0;
        PIE2 = 0;
        PIR1 = 0;
        PIR2 = 0;

        ADCON1 |= 0x0F;                         // Configure all ports with analog function as digital
        CMCON  |= 7;                            // Disable comparators
        //--------------------------------------
        // Ports Configuration
        //--------------------------------------
        TRISA = 0xFF;
        TRISB = 0xFF;
        TRISC = 0xFF;
        TRISD = 0;
        TRISE = 0x07;

        LATA = 0;
        LATB = 0;
        LATC = 0;
        LATD = 0;
        LATE = 0;
        //--------------------------------------
        // Clear user RAM
        // Banks [00 .. 07] ( 8 x 256 = 2048 Bytes )
        //--------------------------------------

        
}
//**************************************************************************************************





//**************************************************************************************************
// Main Program Routine
//**************************************************************************************************

void main() {
  unsigned char i, ch;
  
  Init_Main();

  HID_Enable(&userRD_buffer, &userWR_buffer);
  Delay_ms(1000); Delay_ms(1000);

  while (1) {
    k = HID_Read();
    i = 0;
    while (i < k) {
      ch = userRD_buffer[i];
      userWR_buffer[0] = ch;
      while (!HID_Write(&userWR_buffer, 1)) ;
      i++;
      }

    }
  HID_Disable();
}