using FOP under JRE 1.6

[Ilyin, Dmitri (ext. Dienstleister)]

Hi,

i try to start FOP (0.94) without xalan under JRE 1.6 
If i right understud the docs, i can omit xalan and co. if i use JDK >
1.4 

Without xalan i get problems: 

java.lang.NoClassDefFoundError:
org/apache/xml/utils/URI$MalformedURIException
        at org.apache.fop.fonts.FontCache.addFont(FontCache.java:246)
        at
org.apache.fop.render.PrintRendererConfigurator.getFontInfoFromConfigura
tion(PrintRendererConfigurator.java:313)
        at
org.apache.fop.render.PrintRendererConfigurator.buildFontListFromConfigu
ration(PrintRendererConfigurator.java:196)
        at
org.apache.fop.render.PrintRendererConfigurator.configure(PrintRendererC
onfigurator.java:93)
        at
org.apache.fop.render.pdf.PDFRendererConfigurator.configure(PDFRendererC
onfigurator.java:70)
        at
org.apache.fop.render.RendererFactory.createRenderer(RendererFactory.jav
a:187)
        at
org.apache.fop.area.RenderPagesModel.<init>(RenderPagesModel.java:70)
        at
org.apache.fop.area.AreaTreeHandler.setupModel(AreaTreeHandler.java:126)
        at
org.apache.fop.area.AreaTreeHandler.<init>(AreaTreeHandler.java:101)
        at
org.apache.fop.render.RendererFactory.createFOEventHandler(RendererFacto
ry.java:224)
        at org.apache.fop.fo.FOTreeBuilder.<init>(FOTreeBuilder.java:99)
        at org.apache.fop.apps.Fop.createDefaultHandler(Fop.java:147)
        at org.apache.fop.apps.Fop.<init>(Fop.java:82)
        at org.apache.fop.apps.FopFactory.newFop(FopFactory.java:226)
        ...............

I use my own generated font metrics. They are configured in fop.xconf
file.

What do i do wrong?

thans a lot
Dmitri