请问一下Wince5.0打补丁后为什么编译有错误？

sysgen错误信息如下，请高手指点！
-nodefaultlib
-ignore:4001
-subsystem:windowsce,5.00
D:\WINCE500\PBWorkspaces\pxa270\WINCE500\MAINSTONEII_ARMV4I\cesysgen\oak\lib\ARMV4I\retail\cxport_ALL.lib
cxport.def : error LNK2001: unresolved external symbol CTEGenRandom
cxport.def : error LNK2001: unresolved external symbol CxLogDeregister
cxport.def : error LNK2001: unresolved external symbol CxLogInitialize
cxport.def : error LNK2001: unresolved external symbol CxLogMsg
cxport.def : error LNK2001: unresolved external symbol CxLogRegister
cxport.def : error LNK2001: unresolved external symbol CxLogShutdown
cxport.def : error LNK2001: unresolved external symbol CxRegReadValues
cxport.def : error LNK2001: unresolved external symbol CxRegWriteValues
cxport.def : error LNK2001: unresolved external symbol g_pLogEvent
D:\WINCE500\PBWorkspaces\pxa270\WINCE500\MAINSTONEII_ARMV4I\cesysgen\sdk\lib\ARMV4I\retail\cxport.lib : fatal error LNK1120: 9 unresolved externals
NMAKE : fatal error U1077: 'link' : return code '0x460'
Stop.
NMAKE : fatal error U1077: 'D:\WINCE500\sdk\bin\i386\nmake.exe' : return code '0x2'
Stop.
NMAKE : fatal error U1077: 'D:\WINCE500\sdk\bin\i386\nmake.exe' : return code '0x2'
Stop.

 嘿嘿这个问题我也研究了很久……最后发现是D:\WINCE500\PBWorkspaces\pxa270\WINCE500\MAINSTONEII_ARMV4I\cesysgen\oak\lib\ARMV4I\retail\   文件夹下lib丢失的问题，所以在升级前把此文件夹备份，然后升级完后把一些丢失的复制回去就行了~

打补丁的时候一定按顺序，先是06年，再07年，要不然会出现编译错误