ffpython import fontforge & psMat modules error on Windows

[snoopy-coder]

I'm trying to install fontforge and psMat modules, but I'm having trouble with this error:

Python 3.7.4 (default, Jul 30 2019, 07:47:48)  [GCC 9.1.0 32 bit] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import fontforge
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: DLL load failed: The specified procedure could not be found.
>>> import psMat
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: DLL load failed: The specified procedure could not be found.
>>>

I checked this problem on two releases - Aug 1,2019 (Python 3.7.4) & Apr 13, 2019 (Python 2.7.16) - the result is absolutely the same. Thanks in advance for any help you might offer as I am helpless.

[jtanx]

What's your Windows version?

[snoopy-coder]

Windows 7 SP1 x64 (6.1.7601)

[jtanx]

If you go to C:\Program Files (x86)\FontForgeBuilds\bin in Windows Explorer and double click on ffpython.exe, what happens? It should launch the python console. If it doesn't it should tell you what dll is missing.

[snoopy-coder]

I run fontforge-console.bat from C:\Program Files (x86)\FontForgeBuilds and then I run ffpython.exe manually:

Enlarge

I suspect that violated any dependencies fontforge.pyd and psMat.pyd from C:\Program Files (x86)\FontForgeBuilds\lib\python3.7\site-packages

[jtanx]

There's a couple of things you can try:

1. If you run ffpython -v, what do you see when you import the module? This is what I see on Windows 7:
   
2. Get dependency walker, copy fontforge.pyd into the bin folder, and open that fontforge.pyd in the dependency walker. See what dll is missing

[snoopy-coder]

Unfortunately, I could not find anything definite, except verbose log (ffpython.exe -v):

Python 3.7.4 (default, Jul 30 2019, 07:47:48)  [GCC 9.1.0 32 bit] on win32
Type "help", "copyright", "credits" or "license" for more information.
import 'atexit' # <class '_frozen_importlib.BuiltinImporter'>
>>> import fontforge
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 670, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 583, in module_from_spec
  File "<frozen importlib._bootstrap_external>", line 1043, in create_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
ImportError: DLL load failed: The specified procedure could not be found.
>>> import psMat
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 670, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 583, in module_from_spec
  File "<frozen importlib._bootstrap_external>", line 1043, in create_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
ImportError: DLL load failed: The specified procedure could not be found.
>>>

And outdated FontForge discussion thread on sourceforge.net describing a similar problem.

[snoopy-coder]

Through trial and error I finally found the solution here.

[kiwi0fruit]

It's still not fixed? I uninstalled FontForge-2019-08-01-Windows.exe and installed FontForge-2019-03-17-Windows.exe -- bug is gone.

[ctrlcctrlv]

I'll reopen this bug for you; I agree with you that it's still an issue and installing third party stuff as @snoopy-coder did is not an acceptable solution long term for the project.