SDK生成Software Platform错误！急！

      我在使用EDK搭建系统，在使用SDK生成Software Platform的时候，软件报出错误，附在帖子最后。
      我使用的台式计算机，intel core i3-2100 cpu，4G 内存，XP SP3操作系统。ISE套件版本11.1。
      官网论坛上也有类似的提问，如：http://forums.xilinx.com/t5/EDK-and-Platform-Studio/Copying-Files-Failed-for-library/td-p/51633，我按照提供的方法试了，仍然存在同样的错误。
      相信有不少人遇到过这个问题吧，你们都是怎么解决的啊?求指教，感激不尽！
附：
make -k clean all
rm -rf microblaze_0/code/
rm -rf microblaze_0/include/
rm -rf microblaze_0/lib/
rm -rf microblaze_0/libsrc/
rm: cannot change to directory `microblaze_0/libsrc/common_v1_00_a/src': Permission denied
rm: cannot remove directory `microblaze_0/libsrc/common_v1_00_a': Directory not empty
rm: cannot change to directory `microblaze_0/libsrc/cpu_v1_11_c/src': Permission denied
rm: cannot remove directory `microblaze_0/libsrc/cpu_v1_11_c': Directory not empty
rm: cannot change to directory `microblaze_0/libsrc/gpio_v2_13_a/src': Permission denied
rm: cannot remove directory `microblaze_0/libsrc/gpio_v2_13_a': Directory not empty
rm: cannot change to directory `microblaze_0/libsrc/lldma_v1_00_b/src': Permission denied
rm: cannot remove directory `microblaze_0/libsrc/lldma_v1_00_b': Directory not empty
rm: cannot change to directory `microblaze_0/libsrc/mpmc_v3_00_a/src': Permission denied
rm: cannot remove directory `microblaze_0/libsrc/mpmc_v3_00_a': Directory not empty
rm: cannot change to directory `microblaze_0/libsrc/standalone_v2_00_a/src': Permission denied
rm: cannot remove directory `microblaze_0/libsrc/standalone_v2_00_a': Directory not empty
rm: cannot change to directory `microblaze_0/libsrc/uartlite_v1_14_a/src': Permission denied
rm: cannot remove directory `microblaze_0/libsrc/uartlite_v1_14_a': Directory not empty
rm: cannot remove directory `microblaze_0/libsrc': Directory not empty
make: *** [clean] Error 1
libgen \
-hw  E:/workspace/xmp/system/SDK/SDK_Export/hw/system.xml \
-pe microblaze_0 \
-od . \
-lp E:/workspace/xmp/system/SDK/SDK_Export -lp E:/workspace/xmp/system/SDK/SDK_Export  \
-log libgen.log SW_Platform_1.mss
libgen
Xilinx EDK 11.1 Build EDK_L.29.1
Copyright (c) 1995-2009 Xilinx, Inc.  All rights reserved.
Command Line: libgen -hw E:/workspace/xmp/system/SDK/SDK_Export/hw/system.xml
-pe microblaze_0 -od . -lp E:/workspace/xmp/system/SDK/SDK_Export -lp
E:/workspace/xmp/system/SDK/SDK_Export -log libgen.log SW_Platform_1.mss
WARNING:EDK:3241 - specified path 'E:\workspace\xmp\system\SDK\SDK_Export\' has
   already been added as a library！
INFO:EDK:1740 - List of peripherals connected to processor instance
   microblaze_0:
  - DDR2_SDRAM
  - DIP_Switches_8Bit
  - LEDs_8Bit
  - Push_Buttons
  - RS232_Uart_1
  - dlmb_cntlr
  - ilmb_cntlr
  - mdm_0
Staging source files.
INTERNAL_ERROR:EDK:MdtBas_Common.c:945:1.80.6.45 - Can not create valid UT_DIR
   object in MakeWriteable
ERROR:EDK:1261 - Failed to add write permission for
   E:\workspace\xmp\sdk\SW_Platform_1\microblaze_0\libsrc\standalone_v2_00_a\
ERROR:EDK:1264 - Failed to copy
   d:\Xilinx\11.1\EDK\sw\lib\bsp\standalone_v2_00_a\src\ to
   E:\workspace\xmp\sdk\SW_Platform_1\microblaze_0\libsrc\standalone_v2_00_a\
INTERNAL_ERROR:EDK:MdtBas_Common.c:945:1.80.6.45 - Can not create valid UT_DIR
   object in MakeWriteable
ERROR:EDK:1261 - Failed to add write permission for
   E:\workspace\xmp\sdk\SW_Platform_1\microblaze_0\libsrc\common_v1_00_a\
ERROR:EDK:1264 - Failed to copy
   d:\Xilinx\11.1\EDK\sw\XilinxProcessorIPLib\drivers\common_v1_00_a\src\ to
   E:\workspace\xmp\sdk\SW_Platform_1\microblaze_0\libsrc\common_v1_00_a\
INTERNAL_ERROR:EDK:MdtBas_Common.c:945:1.80.6.45 - Can not create valid UT_DIR
   object in MakeWriteable
ERROR:EDK:1261 - Failed to add write permission for
   E:\workspace\xmp\sdk\SW_Platform_1\microblaze_0\libsrc\lldma_v1_00_b\
ERROR:EDK:1264 - Failed to copy
   d:\Xilinx\11.1\EDK\sw\XilinxProcessorIPLib\drivers\lldma_v1_00_b\src\ to
   E:\workspace\xmp\sdk\SW_Platform_1\microblaze_0\libsrc\lldma_v1_00_b\
INTERNAL_ERROR:EDK:MdtBas_Common.c:945:1.80.6.45 - Can not create valid UT_DIR
   object in MakeWriteable
ERROR:EDK:1261 - Failed to add write permission for
   E:\workspace\xmp\sdk\SW_Platform_1\microblaze_0\libsrc\mpmc_v3_00_a\
ERROR:EDK:1264 - Failed to copy
   d:\Xilinx\11.1\EDK\sw\XilinxProcessorIPLib\drivers\mpmc_v3_00_a\src\ to
   E:\workspace\xmp\sdk\SW_Platform_1\microblaze_0\libsrc\mpmc_v3_00_a\
INTERNAL_ERROR:EDK:MdtBas_Common.c:945:1.80.6.45 - Can not create valid UT_DIR
   object in MakeWriteable
ERROR:EDK:1261 - Failed to add write permission for
   E:\workspace\xmp\sdk\SW_Platform_1\microblaze_0\libsrc\gpio_v2_13_a\
ERROR:EDK:1264 - Failed to copy
   d:\Xilinx\11.1\EDK\sw\XilinxProcessorIPLib\drivers\gpio_v2_13_a\src\ to
   E:\workspace\xmp\sdk\SW_Platform_1\microblaze_0\libsrc\gpio_v2_13_a\
INTERNAL_ERROR:EDK:MdtBas_Common.c:945:1.80.6.45 - Can not create valid UT_DIR
   object in MakeWriteable
ERROR:EDK:1261 - Failed to add write permission for
   E:\workspace\xmp\sdk\SW_Platform_1\microblaze_0\libsrc\uartlite_v1_14_a\
ERROR:EDK:1264 - Failed to copy
   d:\Xilinx\11.1\EDK\sw\XilinxProcessorIPLib\drivers\uartlite_v1_14_a\src\ to
   E:\workspace\xmp\sdk\SW_Platform_1\microblaze_0\libsrc\uartlite_v1_14_a\
INTERNAL_ERROR:EDK:MdtBas_Common.c:945:1.80.6.45 - Can not create valid UT_DIR
   object in MakeWriteable
ERROR:EDK:1261 - Failed to add write permission for
   E:\workspace\xmp\sdk\SW_Platform_1\microblaze_0\libsrc\cpu_v1_11_c\
ERROR:EDK:1264 - Failed to copy
   d:\Xilinx\11.1\EDK\sw\XilinxProcessorIPLib\drivers\cpu_v1_11_c\src\ to
   E:\workspace\xmp\sdk\SW_Platform_1\microblaze_0\libsrc\cpu_v1_11_c\
ERROR:EDK:1186 - Error(s) while running "Copy Files" for processor microblaze_0.
make: *** [microblaze_0/lib/libxil.a] Error 2
make: Target `all' not remade because of errors.

error 1261和error1264的解决方法：
1 关闭XPS和ISE；
2 右击“我的电脑”，“属性”-“高级”-“环境变量”-“新建”-“变量名”设为CYGWIN-“变量值”设为nontsec；
3 打开XPS，重新编译，可能会出现无法删除某些文件夹的问题，请参考http://wenku.baidu.com/view/25bc7a7202768e9951e738b7.html

我也不知到为什么