OK, just pulled from trunk and trying with Python 2.6.4 on win7 - still no luck though the traceback seems slightly different now.
C:\Users\Brian\Documents\development\web2py\google hg repo>python trunk/gluon/me ta_scheduler.py thumnew task starting task Traceback (most recent call last): File "trunk/gluon/meta_scheduler.py", line 139, in <module> MetaScheduler().loop() File "trunk/gluon/meta_scheduler.py", line 132, in loop self.report_task(task,self.async(task)) File "trunk/gluon/meta_scheduler.py", line 55, in async p.start() File "C:\Python26\lib\multiprocessing\process.py", line 104, in start self._popen = Popen(self) File "C:\Python26\lib\multiprocessing\forking.py", line 239, in __init__ dump(process_obj, to_child, HIGHEST_PROTOCOL) File "C:\Python26\lib\multiprocessing\forking.py", line 162, in dump ForkingPickler(file, protocol).dump(obj) File "C:\Python26\lib\pickle.py", line 224, in dump self.save(obj) File "C:\Python26\lib\pickle.py", line 331, in save self.save_reduce(obj=obj, *rv) File "C:\Python26\lib\pickle.py", line 419, in save_reduce save(state) File "C:\Python26\lib\pickle.py", line 286, in save f(self, obj) # Call unbound method with explicit self File "C:\Python26\lib\pickle.py", line 649, in save_dict self._batch_setitems(obj.iteritems()) File "C:\Python26\lib\pickle.py", line 681, in _batch_setitems save(v) File "C:\Python26\lib\pickle.py", line 286, in save f(self, obj) # Call unbound method with explicit self File "C:\Python26\lib\pickle.py", line 748, in save_global (obj, module, name)) pickle.PicklingError: Can't pickle <function executor at 0x0152AC30>: it's not f ound as __main__.executor Traceback (most recent call last): File "<string>", line 1, in <module> File "C:\Python26\lib\multiprocessing\forking.py", line 342, in main self = load(from_parent) File "C:\Python26\lib\pickle.py", line 1370, in load return Unpickler(file).load() t File "C:\Python26\lib\pickle.py", line 858, in load hum dispatch[key](self) File "C:\Python26\lib\pickle.py", line 880, in load_eof raise EOFError EOFError thum thum thum thum thum thum thum thum thum thum thum thum thum thum thum thum thum