GAE Update Question - google-app-engine

Question

I have a strange question.
What I want to do is update my GAE version from 1.3.5 to 1.4.1/1.4.0.
After installing, I want to run dev_appserver.
But there is a error:
ERROR 2011-01-19 21:50:11,262 dev_appserver.py:3214] Exception encountered handling request
Traceback (most recent call last):
File "C:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver.py", line 3184, in _HandleRequest
response = RewriteResponse(outfile, self.rewriter_chain)
File "C:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver.py", line 2882, in RewriteResponse
response_rewriter(response)
TypeError: DownloadRewriter() takes exactly 2 arguments (1 given)
Note: I didn't change my code and it worked very well on GAE 1.3.5
Thanks for any answers.

Answer 1

The problem has been solved.
We reinstalled gae again at "different folder"
"Different folder" is a key.
If you uninstall gae at the default (same) folder (c:\program files\google\google_appengine), the problems still exist.
So we installed it at c:\program files\goole\google_appending_x (x means any word).
Then it can work.

Answer 2

The problem is solved.
We found when I reinstall GAE 3.5 above. My C:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver.py
Line 2887: def RewriteResponse code is not correct.
The right version is:
def RewriteResponse(response_file,
response_rewriters=None,
request_headers=None):
if response_rewriters is None:
response_rewriters = CreateResponseRewritersChain()
response = AppServerResponse(response_file)
for response_rewriter in response_rewriters:
if response_rewriter.func_code.co_argcount == 1:
response_rewriter(response)
else:
response_rewriter(response, request_headers)
return response
But my version is
def RewriteResponse(response_file,
response_rewriters=None,
request_headers=None):
if response_rewriters is None:
response_rewriters = CreateResponseRewritersChain()
response = AppServerResponse(response_file)
for response_rewriter in response_rewriters:
response_rewriter(response)
return response
There is no if-else .
So the solution is that install GAE at c:\Program files\Google\google_appengine_x....
not at default folder.
Then it will be correct. ^^