Yes, I've upgraded to 1.2.5, I did yesterday in an effort to figure
this out myself, and it didn't affect anything. My app is using:

Google App Engine 1.2.5
Google Web Toolkit 1.7.0
GWT-Incubator for 1.7.0 (14 Jul 2009)
Jython 2.5.0

I'm doing everything in Eclipse 3.5 (Galileo) with the Google Plugin
for Eclipse 3.5, 1.1.0 and Pydev 1.5.0 (for my Jython stuff)

On Sep 4, 11:28 am, Toby Reyelts <to...@google.com> wrote:
> Before we go any further, can you confirm that you've upgraded your
> application to the latest 1.2.5 version, including updating all App Engine
> libraries (such as appengine-api.jar and the ORM libraries) in your
> WEB-INF/lib? This shouldn't be strictly necessary, but it would help narrow
> down the problem.
>
> On Fri, Sep 4, 2009 at 2:21 PM, Xlorep DarkHelm <ch...@darkhelm.org> wrote:
>
> > Ok, I added in logging directly to the servlet facade I have which
> > wraps my Jython servlet to make it work on Google Apps Engine, and I'm
> > not even getting that to show up in the logs. Here's what my last
> > request produced (when I show requests only):
>
> > #
>
> >   1.
> >      09-04 11:08AM 17.783 /showsort/list 500 42787ms 131cpu_ms
> > 131api_cpu_ms 0kb Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:
> > 1.9.1.2) Gecko/20090729 Firefox/3.5.2,gzip(gfe)
> >      See details
>
> >      207.166.99.104 - - [04/Sep/2009:11:09:00 -0700] "POST /showsort/
> > list HTTP/1.1" 500 0 "http://showsort.appspot.com/showsort/
> > 0C52346D6CD87DD73B3C69C32B528FB5.cache.html" "Mozilla/5.0 (Windows; U;
> > Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2,gzip
> > (gfe)"
>
> > This is from the GWT-RPC request, just before it, everything is
> > working perfectly fine for my /showsort/display servlet:
>
> > #
>
> >   1.
> >      09-04 11:08AM 17.781 /showsort/display 200 5576ms 9100cpu_ms 1kb
> > Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/
> > 20090729 Firefox/3.5.2,gzip(gfe)
> >      See details
>
> >      207.166.99.104 - - [04/Sep/2009:11:08:23 -0700] "POST /showsort/
> > display HTTP/1.1" 200 1346 "http://showsort.appspot.com/showsort/
> > 0C52346D6CD87DD73B3C69C32B528FB5.cache.html" "Mozilla/5.0 (Windows; U;
> > Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2,gzip
> > (gfe)" "showsort.appspot.com"
>
> >   2.
> >      D 09-04 11:08AM 20.932
>
> >      DisplayServlet start: [ENTER]
>
> >   3.
> >      D 09-04 11:08AM 21.264
>
> >      DisplayServlet start: [LEVEL 1] Client ID =
> > e9d1b50f-997d-11de-86aa-bb87edc68d5c
>
> >   4.
> >      D 09-04 11:08AM 21.811
>
> >      DisplayServlet run: [LEVEL 1] Starting step: Initialize.
>
> >   5.
> >      I 09-04 11:08AM 22.263
>
> >      DisplayServlet run: Time to process Initialize: 0.00799989700317
>
> >   6.
> >      I 09-04 11:08AM 22.617
>
> >      DisplayServlet start: Number of updates returned: 102
>
> >   7.
> >      D 09-04 11:08AM 23.032
>
> >      DisplayServlet start: [EXIT]
>
> > And then I have the requests for the various resources the page
> > initially requests, and the original "main" servlet at / shows this:
>
> > #
>
> >   1.
> >      09-04 11:07AM 58.906 / 200 17476ms 29205cpu_ms 0kb Mozilla/5.0
> > (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/
> > 3.5.2,gzip(gfe)
> >      See details
>
> >      207.166.99.104 - - [04/Sep/2009:11:08:16 -0700] "GET / HTTP/1.1"
> > 200 703 - "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2)
> > Gecko/20090729 Firefox/3.5.2,gzip(gfe)" "showsort.appspot.com"
>
> >   2.
> >      W 09-04 11:08AM 01.891
>
> >      [showsort/1.336104640234288137].<stderr>: *sys-package-mgr*: The
> > java security manager isn't allowing access to the package cache dir,
> > 'cachedir/packages'
>
> > Which is fine. Now, I've checked my web.xml file, and it seems to be
> > correct, I've checked the Service interface in my GWT code and it is
> > pointing to the correct path to access the servlet, and I've rechecked
> > my code that calls the GWT-RPC servlet, and the servlet (and servlet
> > facade), it all is fine.
>
> > There just doesn't seem to be any connection going on here.
>
> > Now, I *know* that going to a GWT-RPC servlet RemoteServlet doesn't
> > work... but I'm getting 2 different kinds of responses, depending on
> > my servlet.
>
> > If I go to:http://showsort.appspot.com/showsort/display-- in Mozilla
> > Firefox, I get a blank page. I expect this, as it doesn't have a GET
> > or POST interface, and that's fine.
>
> > If I go to:http://showsort.appspot.com/showsort/list-- in Mozilla
> > Firefox, I get a 500 Server Error page. This is strange to me, and
> > unexpected.
>
> > The main fundamental difference between the two is that the list
> > servlet requires datastore functionality, the display servlet only
> > does when called upon to generate a full set of display updates for a
> > selected sorting algorithm... only possible if I get the list of
> > available sorting algorithms from the list servlet, which isn't
> > happening.
>
> > On Sep 4, 10:48 am, Xlorep DarkHelm <ch...@darkhelm.org> wrote:
> > > I can see the requests being made when I look at the logs for when the
> > > app runs. So there definitely are requests for /showsort/list being
> > > called, by my app. This is an automatic call, which has been working
> > > fine up until 2 days ago. Coincidentally about the same time that the
> > > updates previously mentioned which had to be rolled back were done.
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