I've had a bit of trouble with my RSS, and currently have

Hi,

I've had a bit of trouble with my RSS, and currently have two problems to fix:

1. The url is now returning a 404 error.
2. When it didn't, it still wouldn't validate due to another plugin... which I need to keep.

Is there a way to get it working again, at least to the point where it isn't giving a 404 error but it doesn't validate?

Cheers,
Matt