I am trying to make use of a script that uses CPAINT and I keep getting the error above when I click on favourite an item (a 5 star rating system).

It looks like it is making an AJAX request but I can not see this from my Firebug to debug this - why is this the case?

More importantly what does the error code 0 mean?

Thank you all for any help

I am trying to make use of a script that uses CPAINT and I keep getting the error above when I click on favourite an item (a 5 star rating system).

It looks like it is making an AJAX request but I can not see this from my Firebug to debug this - why is this the case?

More importantly what does the error code 0 mean?

Thank you all for any help

• javascript
• ajax

Share Improve this question Follow edited Jun 16, 2010 at 21:41 Daniel Vassallo 345k7272 gold badges512512 silver badges446446 bronze badges asked Jun 16, 2010 at 20:32 AbsAbs 58k103103 gold badges282282 silver badges417417 bronze badges

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Sorted by: Reset to default 5

A response code of 0 from XMLHttpRequest can mean that you are being blocked by the same origin policy. Make sure that you are using relative URLs for your AJAX requests.

You may also want to check out the following Stack Overflow post for one possible solution to workaround the same origin policy:

• XMLHTTPRequest.status returns 0 and responseText is blank in FireFox 3.5