strange behavior after upgrade to Pyro 4.32

I have some trouble debugging this. My remote command program Remco 
(https://github.com/zappfinger/remco) worked fine.
Since I upgraded to Pyro 4.32 I have some trouble.
I am trying to create a remote directory, as can be seen from the last 
line before the error:
result = flame.module("flame.stuff").doCommand('mkdir ' + fildir) #    
create remote dir also

why do I get:
OSError: [Errno 2] No such file or directory: 'mkdir static'?

The code in doCommand (running on the remote machine) is simply:
ret = os.popen(command).read()


Traceback (most recent call last):
   File "/Users/richard/Downloads/remco/remco.py", line 132, in <module>
     putFileOrDir(command)
   File "/Users/richard/Downloads/remco/remco.py", line 100, in putFileOrDir
     putFileOrDir('put ' + fildir)
   File "/Users/richard/Downloads/remco/remco.py", line 94, in putFileOrDir
     result = flame.module("flame.stuff").doCommand('mkdir ' + 
fildir)    #    create remote dir also
   File "/Library/Python/2.7/site-packages/Pyro4/core.py", line 168, in 
__call__
     return self.__send(self.__name, args, kwargs)
   File "/Library/Python/2.7/site-packages/Pyro4/utils/flame.py", line 
84, in __invoke
     return self.flameserver.invokeModule(module, args, kwargs)
   File "/Library/Python/2.7/site-packages/Pyro4/core.py", line 168, in 
__call__
     return self.__send(self.__name, args, kwargs)
   File "/Library/Python/2.7/site-packages/Pyro4/core.py", line 395, in 
_pyroInvoke
     raise data
OSError: [Errno 2] No such file or directory: 'mkdir static'
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