Problems importing libpandaexpress.dll

Scripting Issues
1

Hello! I’m new to Forum and Panda3D.
I’m creating a script to use the multifile module; it’s ready but when I tried to compile it with py2exe, it didnt work! -> problems with the DLLs
so, I tried to import the DLL by myself. The script is:

import os

from libpandaexpressModules import *

global mf
global vfs

mf = Multifile()
vfs = VirtualFileSystem.getGlobalPtr()

#print dir(mf)

def Open(file,passw=None):
    mf.openReadWrite(file)
    if passw != None:
        mf.setEncryptionFlag(True)
        mf.setEncryptionPassword(passw)

def ReadSubFile(file):
    index = mf.findSubfile(file)
    if index == -1: return
    return mf.readSubfile(index)

def AddSubFile(fname,compress=9): #not working
    mf.update_subfile(fname, Filename.binaryFilename(fname),9)
    mf.flush()

def SubFile_Exists(sf):
    return (mf.findSubfile(sf) != -1)

def Get_SubFiles():
    return mf.getSubfileNames()

def Get_SubFiles_ext():
    sf = []
    sft = []
    for i in range(mf.getNumSubfiles()):
        sft.append(str(mf.getSubfileName(i)))
        sft.append(str(mf.getSubfileLength(i))+" Bytes")
        sf.append(sft)
        sft = [] #clear
    return sf

def Get_SubFileID(name):
    n = mf.findSubfile(name)
    return n

def ExtractSubFile(sid,path):
      a = open(path,"wb")
      print "extracting",sid,"ID:",Get_SubFileID(sid)
      fdata = ReadSubFile(sid)
      a.write(fdata)
      a.close()
      
if __name__ == "__main__":
    Open("test.mf")

and i get:

Traceback (most recent call last):
File “C:\Panda3D-1.7.2\samples\mfPPack\mfzip.py”, line 3, in
from libpandaexpressModules import *
File “C:\Panda3D-1.7.2\samples\mfPPack\libpandaexpressModules.py”, line 1, in
from extension_native_helpers import *
File “C:\Panda3D-1.7.2\samples\mfPPack\extension_native_helpers.py”, line 82, in
Dtool_PreloadDLL(“libpandaexpress”)
File “C:\Panda3D-1.7.2\samples\mfPPack\extension_native_helpers.py”, line 80, in Dtool_PreloadDLL
imp.load_dynamic(module, pathname)
ImportError: DLL load failed: Não foi possível encontrar o procedimento especificado.

note that I copied the libpandaexpress.dll, libpandaexpressModules.py and extension_native_helpers.py to this directory (C:\Panda3D-1.7.2\samples\mfPPack)

How can I get rid of this error?
Thanks in advance!
Loblão