It works if you wrap anything into a class.

import poser
import time

class test(object):
    def __init__(self):
        pass
    def main(self):
        t=time.time()
        while 1:
            poser.Scene().ProcessSomeEvents(10)
            if t +10 > time.time() :
                t=time.time()
                print t
        
t=test()
t.main()

Here is the output. I started "Inventory". As you can see, Iventory does it's job and the output continues.

1215613654.8
1215613655.39
1215613655.65
1215613655.88
1215613656.39
.RuntimePythonposerScriptsMaterialModsset_mats.py was successfully created.
Open it to view material inventory.  Modify and run it to set materials.

1215613657.63
1215613657.86

---