XML parsing error at RSS preview page

[goulvench@…]

On Firefox 3.0 Mac, Karma blocker causes Feed preview to display the XML Parsing error below:

XML Parsing Error: 
Location: jar:file:///Applications/Firefox.app/Contents/MacOS/chrome/browser.jar!/content/browser/feeds/subscribe.xhtml
Line Number 16, Column 1:
<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
^

The problem appears even when karma blocker is the only enabled addon.

[t-bone]

What is your KarmaBlocker configuration when this happens?

[goulvench@…]

Replying to t-bone:

What is your KarmaBlocker configuration when this happens?

Pretty much the default one, with only a couple additions at the end... Here it is:

[Settings]
threshold=10
cutoff=100

# "Whitelist" a particular domain
[Group]
score=-100
rule=$url.host=='www.example.com'

# Block web pages from accessing chrome files
[Group]
score=100
match=all
rule=$url.scheme=='chrome'
rule=$origin.scheme!='chrome'

# Assign karma to third party resources
[Group]
score=5
rule=$thirdParty==true

# Assign karma to URLs with a word that starts "ad" or "banner"
[Group]
score=5
rule=$url=~'\b(ad|banner)'

# Assign karma to URLs that contain "feedads"
[Group]
score=5
rule=$url=~'\b(feedads)'
rule=$url=~'\b(fastclick)'
rule=$url=~'\b(mybloglog)'

[t-bone]

(In [527]) Fixes #222

• Never block core parts of the browser itself.

[goulvench@…]

Another way to trigger the problem:

• go to a page containing an insecure iframe
• Browser tries to replace the iframe with a security warning
• karma blocker chokes on security warning and throws an unidentified entity error

Insecure iframe:

www.velov.grandlyon.com/Inscription.87.0.html