请教：Synplify，ISE，Modelsim联合后仿真问题！

各位老师好：小的有一问题请教！
我在用ISE和Modelsim作后仿真时,提示如下错误信息,我实在搞不定了,请您帮我看看!多谢了！
vsim work._opt2
# vsim work._opt2
# ** Warning: (vsim-1963) Explicit invocation on automatically named optimized design "_opt2" will not cause it to be locked.
# Loading work.glbl(fast)
# Loading work.writingTop(fast)
# Loading work.writing(fast)
# Loading E:/graduation project/Xilinx9.1i_back_sim_lib/simprim_ver.X_IPAD(fast)
# Loading E:/graduation project/Xilinx9.1i_back_sim_lib/simprim_ver.X_BUF(fast)
# Loading E:/graduation project/Xilinx9.1i_back_sim_lib/simprim_ver.X_OPAD(fast)
# Loading E:/graduation project/Xilinx9.1i_back_sim_lib/simprim_ver.X_OBUFT(fast)
# Loading E:/graduation project/Xilinx9.1i_back_sim_lib/simprim_ver.X_BUFGMUX(fast)
# Loading E:/graduation project/Xilinx9.1i_back_sim_lib/simprim_ver.X_INV(fast)
# Loading E:/graduation project/Xilinx9.1i_back_sim_lib/simprim_ver.X_LUT4(fast)
# Loading E:/graduation project/Xilinx9.1i_back_sim_lib/simprim_ver.X_FF(fast)
# Loading E:/graduation project/Xilinx9.1i_back_sim_lib/simprim_ver.X_SFF(fast)
# Loading E:/graduation project/Xilinx9.1i_back_sim_lib/simprim_ver.X_SFF(fast__1)
# Loading E:/graduation project/Xilinx9.1i_back_sim_lib/simprim_ver.X_ONE(fast)
# Loading E:/graduation project/Xilinx9.1i_back_sim_lib/simprim_ver.X_ZERO(fast)
# ** Error: (vsim-SDF-3894) netgen/par/writing_timesim.sdf: Compiled SDF file was not found.
# Loading instances from E:\graduation project\exercise9\sim\work/@_opt2/__sdf1
# Loading timing data from E:\graduation project\exercise9\sim\work/@_opt2/__sdf1
# ** Error: (vsim-7) Failed to open SDF file "netgen/par/writing_timesim.sdf" in read mode.
# No such file or directory. (errno = ENOENT)
# ** Error: (vsim-SDF-3445) Failed to parse SDF file "netgen/par/writing_timesim.sdf".
#    Time: 0 ps  Iteration: 0  Region: /glbl  File: D:/Xilinx9.1i/verilog/src/glbl.v
# Error loading design

是不是在modelsim里面没有指定sdf文件的路径？
见下面的路径：

回复 2# njithjw


    遇到同样问题，路径添加了还是产生同样的错误

你把上面图中的这两个选项也选上
Disable SDF warnings
Reduce SDF errors to warnings
然后再重新仿真一下试一下。
如果还有问题，你能不能把你的错误报告帖上来看一下，现在这样交流根本不知道是什么错误。

不好意思，没看到上面的错误信息。
如果还搞不定，最好能把你的工程发上来，让大家帮忙一起看一下，论坛里面还是有很多高手的。