xilinx ise出现错误

对xilinx的ISE我已无力吐槽，看来在中国推广不开还是有原因的，昨天新建一个工程，加了个DDR2的ip核，完全没问题，今天照着昨天的步骤又来了一遍，除了些莫名其妙的错误.....................
ERROR:EDK:1907 - NgcBuild failed!
INFO:EDK:2245 - Refer to
C:UsersBarryToughDocumentswork FPGAMicroBlazehelloworld2sys_cpuimplem
enta tionsys_cpu_axi_4_0_wrapper.blc for details.
INFO:EDK:3509 - NCF files should not be modified as they will be regenerated.
If any constraint needs to be overridden, this should be done by modifying
the data/sys_cpu.ucf file.
Rebuilding cache ...
ERROR:EDK:440 - platgen failed with errors!
make: *** [implementation/sys_cpu_microblaze_0_ilmb_wrapper.ngc] ?í?ó 2
ERROR:EDK -
Error while running "make -f sys_cpu.make netlist".
ERROR: synthesizing XPS module failed!
Process "XPS Process: Synthesize XPS Source" failed
求大神指教