I am kind of sure all browser has a size limit on GET method
IE6 just happens to have the smaller one.

On a general way, there is very few advantage to use GET instead of
POST, so you should not use GET except in some very specific cases
like sending an username or a fixed size's session ID[1]

However, you should know that there is also a size limit in POST
parameters on the server side.
Default value for those is often around 8 or 16 MB (which should be
Note also that some server-side technologies (like PHP) have another
limit for the size of uploaded files.
This means that if this limit is 2MB, you will not be able to send a
3MB file in your form, even if you fixed the POST limit size to


[1] I said it would work. Not that it would be safe to do it :o)
[2] I lost a lot of time on this one first time I met this issue...

On Aug 11, 3:47 am, KammylandSoftware <kammyl...@gmail.com> wrote:
> I found the solution, actually.
> As it happens IE 6 has a payload length limit when using the GET
> method. As it just so happens, I was in fact using the GET method to
> send some parameter data to the server in an ajax request (using
> prototype). Hence, the ajax request would not go through; then, when I
> assayed to access ajaxRequest.transport.responseText, I appeared to
> get the "The data necessary to complete this operation is not yet
> available" error, as it indeed was not available since the ajax
> request never went through; not withstanding I did send the Ajax
> request as asynchronous, it was thrown.
> The solution apparently was to use the POST method instead of GET, as
> IE 6 does not seem to have a similar limit on POST's payload as it
> does on GET's.
> Thanks anyhow fellows.
> On Aug 4, 1:12 pm, Eric <lefauv...@gmail.com> wrote:
> > I think IE8 features a "not that bad" javascript debugger.
> > If you activate it and reload your page, it will stop on the faulty
> > line.
> > On Jul 30, 10:45 pm, KammylandSoftware <kammyl...@gmail.com> wrote:
> > > Using the latest Prototype and Scriptaculous scripts hereto (July,
> > > 2010) I am getting this error in IE 8:
> > > "The data necessary to complete this operation is not yet available".
> > > As IE does not give us a script filename but only a all-scripts-
> > > aggregate line number where the error occured, I have no idea what
> > > could be causing this. I did a Google search, but the only reasonable
> > > hit I got does not seem to exists anymore.
> > > Regards.

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