XPaths are queries. They don't validate. Your request to help you turn off validation cannot be satisfied.
And then there's the fact that the concept of defining a namespace makes no sense. Every single uri is already available to use as a namespace. Nothing needs to be defined. This makes your error message suspicious. Please provide the actual error message.
You'd also do well to provide a minimal example of the problem. It's hard and annoying to fix your error without seeing it.
In reply to Re: Turning off namespace validation in XML::LibXML...
by ikegami
in thread Turning off namespace validation in XML::LibXML...
by biswanath_c
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