Implementing the XSLT Mediator – Part 1

4 thoughts on “Implementing the XSLT Mediator – Part 1”

  1. Hi Yoav,

    Great to see more Tridion knowledge out here ‘the wild’ instead of just the tridion forum.

    I’ve created my own custom XSLT helper class from the IXSLTHelper interface. The helper is loaded from the .NET assembly stored in Tridion. This works great in Template Builder and when publishing items. However, when I do a preview in the GUI I get the following error:

    “Cannot find the script or external object that implements prefix ‘’.”

    The namespace here is the one I used for the ‘TridionXSLTHelperNS’ attribute.
    It appears that the “GetHelpersFromTridion” method is not getting called (or fails) when using preview mode. Have you seen this error before? Any ideas on how to fix this?

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