WindowsError: priveledged instruction when saving a FreeImagePy Image in script, works in IDLE

Question

I'm working on a program to do some image wrangling in Python for work. I'm using FreeImagePy because PIL doesn't support multi-page TIFFs. Whenever I try to save a file with it from my program I get this error message (or something similar depending on which way I try to save):

Error returned.  TIFF FreeImage_Save: failed to open file C:/OCRtmp/ocr page0
Traceback (most recent call last):
  File "C:\Python25\Projects\OCRPageUnzipper\PageUnzipper.py", line 102, in <mod
ule> OCRBox.convertToPages("C:/OCRtmp/ocr page",FIPY.FIF_TIFF)
  File "C:\Python25\lib\site-packages\FreeImagePy\FreeImagePy\FreeImagePy.py", l
ine 2080, in convertToPages self.Save(FIF, dib, fileNameOut, flags)
  File "C:\Python25\lib\site-packages\FreeImagePy\FreeImagePy\FreeImagePy.py", l
ine 187, in Save return self.__lib.Save(typ, bitmap, fileName, flags)
WindowsError: exception: priviledged instruction

When I try and do the same things from IDLE, it works fine.

Answer 1

Looks like a permission issues, make sure you don't have the file open in another application, and that you have write permissions to the file location your trying to write to.

Answer 2

That's what I thought too, but I figured it out a couple hours ago. Apparently if the directory/file I'm trying to write to doesn't exist, FreeImagePy isn't smart enough to create it (most of the time. Creating a new multipage image seems to work fine) but i guess running it within IDLE, IDLE figures it out and takes care of it or something. I managed to work around it by using os.mkdir to explicitly make sure things that I need exist.