无法在PyCharm中加载DLL python模块。在IPython中工作正常

当我使用Enthought Python发行版随附的IPython时，可以很好地导入pyvision包。但是，当我尝试在PyCharm 1.2.1中导入pyvision时，出现以下错误

  File "C:\Python27\lib\site-packages\pyvision\__init__.py", line 146, in 
    from pyvision.types.img import Image,OpenCVToNumpy,NumpyToOpenCV
  File "C:\Python27\lib\site-packages\pyvision\types\img.py", line 43, in 
    import numpy
  File "C:\Python27\lib\site-packages\numpy\__init__.py", line 142, in 
    import add_newdocs
  File "C:\Python27\lib\site-packages\numpy\add_newdocs.py", line 9, in 
    from numpy.lib import add_newdoc
  File "C:\Python27\lib\site-packages\numpy\lib\__init__.py", line 13, in 
    from polynomial import *
  File "C:\Python27\lib\site-packages\numpy\lib\polynomial.py", line 17, in 
    from numpy.linalg import eigvals, lstsq
  File "C:\Python27\lib\site-packages\numpy\linalg\__init__.py", line 48, in 
    from linalg import *
  File "C:\Python27\lib\site-packages\numpy\linalg\linalg.py", line 23, in 
    from numpy.linalg import lapack_lite
ImportError: DLL load failed: The specified module could not be found.

我是否缺少Windows中的某些路径设置？