nios vga controller

I am doing a project using TRDA-D5M to input image to DE2. The package of TRDB-D5M comes with the coding for storing the data into SDRAM and output to vga. I need to process the image captured by the camera which stored in SDRAM. Hence, I had built a module so called CMOS controller to interface the SDRAM with the NIOS. Now, I want to build a VGA controller using SOPC builder in order to capture the data from the cpu or CMOS controller for display. I used the VGA controller provided in DE2 disk under component section to build a new component in SOPC builder. However, I get this errors---->

Error: set ALTERA_HW_TCL_KEEP_TEMP_FILES=1 to retain temp files

Error: Command: c:/altera/10.0/quartus//bin/quartus_map.exe not_a_project --generate_hdl_interface=C:/altera/10.0/cam/hdl/VGA_NIOS_CTRL.v --source=C:/altera/10.0/cam/hdl/VGA_Controller.v --source=C:/altera/10.0/cam/hdl/Img_RAM.v --source=C:/altera/10.0/cam/hdl/VGA_OSD_RAM.v --source=C:/altera/10.0/cam/hdl/VGA_NIOS_CTRL.v --set=HDL_INTERFACE_OUTPUT_PATH=C:/Users/RICKYY~1/AppData/Local/Temp/alt4925_3538248411242696065.dir/0005_sopcqmap/

Error: VGA_Controller_0: Info: *******************************************************************

Error: VGA_Controller_0: Info: Running Quartus II Generate HDL Interface

Error: VGA_Controller_0: Info: Version 10.0 Build 218 06/27/2010 SJ Web Edition

Error: VGA_Controller_0: Info: Copyright (C) 1991-2010 Altera Corporation. All rights reserved.

Error: VGA_Controller_0: Info: Your use of Altera Corporation's design tools, logic functions

Error: VGA_Controller_0: Info: and other software and tools, and its AMPP partner logic

Error: VGA_Controller_0: Info: functions, and any output files from any of the foregoing

Error: VGA_Controller_0: Info: (including device programming or simulation files), and any

Error: VGA_Controller_0: Info: associated documentation or information are expressly subject

Error: VGA_Controller_0: Info: to the terms and conditions of the Altera Program License

Error: VGA_Controller_0: Info: Subscription Agreement, Altera MegaCore Function License

Error: VGA_Controller_0: Info: Agreement, or other applicable license agreement, including,

Error: VGA_Controller_0: Info: without limitation, that your use is for the sole purpose of

Error: VGA_Controller_0: Info: programming logic devices manufactured by Altera and sold by

Error: VGA_Controller_0: Info: Altera or its authorized distributors. Please refer to the

Error: VGA_Controller_0: Info: applicable agreement for further details.

Error: VGA_Controller_0: Info: Processing started: Fri Nov 12 08:48:55 2010

Error: VGA_Controller_0: Info: Command: quartus_map not_a_project --generate_hdl_interface=C:/altera/10.0/cam/hdl/VGA_NIOS_CTRL.v --source=C:/altera/10.0/cam/hdl/VGA_Controller.v --source=C:/altera/10.0/cam/hdl/Img_RAM.v --source=C:/altera/10.0/cam/hdl/VGA_OSD_RAM.v --source=C:/altera/10.0/cam/hdl/VGA_NIOS_CTRL.v --set=HDL_INTERFACE_OUTPUT_PATH=C:/Users/RICKYY~1/AppData/Local/Temp/alt4925_3538248411242696065.dir/0005_sopcqmap/

Error: VGA_Controller_0: Info: Quartus II Generate HDL Interface was successful. 0 errors, 0 warnings

Error: VGA_Controller_0: Info: Peak virtual memory: 265 megabytes

Error: VGA_Controller_0: Info: Processing ended: Fri Nov 12 08:48:57 2010

Error: VGA_Controller_0: Info: Elapsed time: 00:00:02

Error: VGA_Controller_0: Info: Total CPU time (on all processors): 00:00:01

Error: VGA_Controller_0: Command took 1.872s

Error: VGA_Controller_0: No definition of VGA_Controller in C:/altera/10.0/cam/hdl/VGA_NIOS_CTRL.v

Error: VGA_Controller_0.avalon_slave_0: Has readdatavalid but no read signal

Error: VGA_Controller_0.avalon_slave_0: Slave with readdatavalid signal must support at least 1 pending read

What does these means?..

How can i fix the problem?..i hope can get some advices from experts. Thanks.