ERROR:EDK:3593 - Unable to locate the precompiled library microblaze_v8_50_c.
The file
D:\Xilinx\14.7\ISE_DS\EDK\hw\XilinxProcessorIPLib\pcores\microblaze_v8_50_c\h
dl\vhdl\microblaze_types_pkg.vhd is distributed by Xilinx encrypted and will
not be read by any simulator. Please use compxlib to setup the EDK
precompiled libraries and provide the path to them using the -E switch.
ERROR:EDK:1172 - Error while creating simulator compile scriptDone!

解决办法：

在Xilinx Platform Studio（EDK，XPS）中，Edit-->Preferences-->Simulation

之后执行Launch Compile Process  等待编译完成，编译报告可以copy成log.txt用UE打开。以后遇到哪个库编译的有问题可以通过查找相应的log文件定位错误所在。

接下来执行Generate HDL Files --> Launch Simulator