RSS problem on a board using gzip

[feamsr00]

I have my forum setup to use gzip compression for output, just recently I decided to use rss, after tring to validate it,I got this:

operable program or batch file. 
X-Powered-By: PHP/5.0.3 
Set-Cookie: PHPSESSID=ef47f5e138fc8dedcf2b9bea2d34d916; path=/ 
Expires: Thu, 19 Nov 1981 08:52:00 GMT 
Pragma: no-cache 
Cache-Control: private 
Vary: Accept-Encoding 
Content-Type: application/rss+xml 
Content-Encoding: gzip 
Vary: Accept-Encoding 

[A BUNCH OF GZIP DATA]  

As you can see the rss has been gzip'd.  Is this a feature or a bug?
I would imagen its a bug because no rss reader I've seen understands this.  So what can I do about it?

[[Unknown]]

I'm worried about this:

"operable program or batch file."

Looks like an error message .

Content-Encoding: gzip

Well, the rss reader is telling SMF "I can read gzip, so if you want to gzip it... send it off to me, please!" so if it isn't, indeed, able to do so... then it's lying and that's a bug in it.  But, for the record, I've tried many readers on this forum installed here (the on you're looking at) and even though its compression is enabled they've all worked.

In other words, when the rss reader talks to simplemachines.org, it sends a request, like this:

GET /community/index.php?type=rss;action=.xml HTTP/1.0

But, if it supports gzip, it would have to send a longer one:

GET /community/index.php?type=rss;action=.xml HTTP/1.1
Host: www.simplemachines.org
Accept-Encoding: gzip,deflate
Connection: close

Why it would do this, I couldn't guess.

-[Unknown]