Cam you show how the files are located and your include tag

This works for me:
/xslt/Sitemap.xslt
/xslt/Include.xslt

Sitemap.xslt looks like this

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE xsl:stylesheet [<!ENTITY nbsp "&#x00A0;">]>
<xsl:stylesheet ...>
    <xsl:output method="xml" omit-xml-declaration="yes" />
    <xsl:param name="currentPage"/>

    <xsl:include href="Include.xslt"/>

    <xsl:template match="/">

        <!-- Here I can call templates from include.xslt -->

    </xsl:template>

</xsl:stylesheet>

Could just be that you include/import at the wrong point in the main file? Both instructions has to be direct children of the <xsl:stylesheet> element, and <xsl:import> must precede any other element in the namespace.

/Chriztian

@Christian Palm: This work for me too, but if I try put files into subfolder (basket in my case) it stop working (I also try change href parameter to "basket\include.xslt")

@Christian Steinmeier: Umbraco perform check to path for href, and in main xslt folder it works.

My structure is:

\xslt
  \basket

when I put both files into basket subfolder it stop working :-(

Where is your xslt file living in the folder structure that refences the include.

If you are putting them both in the basket folder the href needs to be as so "include.xslt"

I create another test:

folder structure:

/xslt
  /subfolder
     test.xslt
     shared.xslt

I must use this statement to work after publishing, it cause error when saving xslt, but work when I check skip testing

<xsl:include href="../subfolder/shared.xslt" />

when I use

<xsl:include href="subfolder/shared.xslt" />

It saves ok, but cause Error reading XSLT file: \xslt\subfolder/test.xslt at runtime.

Petr

I just tried the same, where I use

<xsl:include href="include/includefile.xsl" />

This works as expected, with the following directory structure:

/xslt
  /include
    includefile.xsl

The ONLY issue I seem to have at the moment is that the backend "Developer" section shows the subfolder under XSLT, including an arrow. But as soon as I click the arrow, it disappears. So I can't in any way list the content of ../include. No big deal, I can access via FTP. But I guess this is a tiny bug somewhere in the tree function.

Btw: do anyone know if it is necessary to declare namespaces etc in the included files as well ? I was thinking the could would be included then afterwards, the entire XSLT evaluated.

is working on a reply...