program with raw_input prompt behaves differently after compile

[tim]

I want to write a program that looks into a given folder, groups files 
that have a certain part of the filename in common and then copy those 
groups one at a time to another place, using the raw_input prompt to 
continue or break.

here's what I have:

###########
def makegroepen():
    global p
    import os
    from longestcommonprefix import longestcommonprefix
    p = raw_input('path')
    l = os.listdir(p)
    l.sort()
    groepen=[]
    groep=[]
    basenames=[]
    for r in l:
        if r.find('_poly16.mp3'):
                 baselist = r.split('_')
                 mopobasename = baselist[0]
                 if mpbasename not in basenames:

                    basenames.append(mpbasename)
                    for s in l:

                            if 
longestcommonprefix([s,mpbasename])==mpbasename:
                                print mpbasename
                                if s not in groep:
                                    groep.append(s)
                    if len(groep)==6:
                        groepen.append(groep)
                    groep=[]
    print groepen
    return groepen
def movegr():
    global p, groepen
    for t in groepen:
        contprompt=raw_input('continue? (n to stop)')
        if contprompt=='n':
                break
        for curr in t:
            if os.path.isfile(p+'\\'+curr):
                tempfile = open(p+'\\'+curr, 'rb')
                tempfile.seek(0)
                tempfilecont = tempfile.read()
                dircondition = os.path.exists('c:\\content\\workfolder')
                if dircondition == False:
                    os.makedirs('c:\\content\\workfolder')
                destfile = open('c:\\content\\workfolder\\'+curr, 'wb')
                destfile.write(tempfilecont)
                destfile.close()
if __name__=='__main__':
    global groepen
    groepen = makegroepen()
    movegr()

########
(I renamed 'commonprefix' to 'longestcommonprefix', it is actually just 
the 'binary search version' I found at 
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/252177 )

It works fine when I run this from PythonWin IDE, but after compiling an 
executable from it (py2exe) it exits whatever I type in the 'continue?' 
prompt.
What am I doing wrong?
Thanks,
Tim