为什么没产生.NMS文件呢？

2.If SoftICE is not already loaded, load SoftICE.

3.Start Symbol Loader.

4.Click Open to open the module that you want to debug.

5.Click Package source with symbol table .

6.Click Translate to create a new .NMS symbol file.
第六步完成后Symbol Loader提示：
Translating D:\\Program Files\\Compuware\\SoftICE Driver Suite\\DriverWorks\\cc\\Debug\\cc.exe. . .
Error: Can\'t find Visual C++ MSPDBXX.DLL in path. Add the DevStudio\\sharedide\\bin directory to path.
这是怎么回事啊，请多指教。谢谢