Hello Steve!
The error you get is most likely caused by some erroneous PNG image file or some other image file with alpha transparency. Ask Google for more information about this issue. You need to find out which image file is causing the error. The most common solution is to simply run that image file through ImageMagick. See e.g.
http://comments.gmane.org/gmane.text.xml.fop.user/31508
Regards,
/frank
26 apr 2011 kl. 00.45 skrev Steve Johnson:
> In my customization file for FO processing, I have this:
>
> <xsl:param name="admon.graphics" select="0"></xsl:param>
> <xsl:param name="admon.graphics.path">Graphics/</xsl:param>
>
> If I change the first line to:
>
> <xsl:param name="admon.graphics" select="1"></xsl:param>
>
> I get a horrendously long and ugly stack trace and I don't know why. Help? (xsltproc handles it fine)
>
> Apr 25, 2011 5:44:02 PM org.apache.fop.fo.FOTreeBuilder fatalError
> SEVERE: javax.xml.transform.TransformerException: java.lang.NullPointerException: Parameter alpha must not be null
> Apr 25, 2011 5:44:02 PM org.apache.fop.cli.Main startFOP
> SEVERE: Exception
> javax.xml.transform.TransformerException: java.lang.NullPointerException: Parameter alpha must not be null
> at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:217)
> at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:125)
> at org.apache.fop.cli.Main.startFOP(Main.java:166)
> at org.apache.fop.cli.Main.main(Main.java:197)
> Caused by: javax.xml.transform.TransformerException: java.lang.NullPointerException: Parameter alpha must not be null
> at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2416)
> at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:1374)
> at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:393)
> at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:176)
> at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:393)
> at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:176)
> at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2411)
> at org.apache.xalan.templates.ElemIf.execute(ElemIf.java:160)
> at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2411)
> at org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:139)
> at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2411)
> at org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:139)
> at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2411)
> at org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:139)
> at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2411)
> at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2281)
> at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1367)
> at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:709)
> at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1284)
> at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1262)
> at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:214)
> ... 3 more
> Caused by: java.lang.NullPointerException: Parameter alpha must not be null
> at org.apache.fop.pdf.AlphaRasterImage.<init>(AlphaRasterImage.java:54)
> at org.apache.fop.pdf.AlphaRasterImage.<init>(AlphaRasterImage.java:68)
> at org.apache.fop.render.pdf.ImageRenderedAdapter.setup(ImageRenderedAdapter.java:101)
> at org.apache.fop.pdf.PDFDocument.addImage(PDFDocument.java:823)
> at org.apache.fop.render.pdf.PDFImageHandlerRenderedImage.generateImage(PDFImageHandlerRenderedImage.java:58)
> at org.apache.fop.render.pdf.PDFRenderer.putImage(PDFRenderer.java:1745)
> at org.apache.fop.render.pdf.PDFRenderer.renderImage(PDFRenderer.java:1679)
> at org.apache.fop.render.AbstractRenderer.renderViewport(AbstractRenderer.java:743)
> at org.apache.fop.render.AbstractPathOrientedRenderer.renderViewport(AbstractPathOrientedRenderer.java:621)
> at org.apache.fop.render.AbstractRenderer.renderInlineArea(AbstractRenderer.java:626)
> at org.apache.fop.render.pdf.PDFRenderer.renderInlineArea(PDFRenderer.java:1345)
> at org.apache.fop.render.AbstractRenderer.renderLineArea(AbstractRenderer.java:601)
> at org.apache.fop.render.pdf.PDFRenderer.renderLineArea(PDFRenderer.java:1336)
> at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:536)
> at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:573)
> at org.apache.fop.render.pdf.PDFRenderer.renderBlock(PDFRenderer.java:1329)
> at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:526)
> at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:573)
> at org.apache.fop.render.pdf.PDFRenderer.renderBlock(PDFRenderer.java:1329)
> at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:526)
> at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:573)
> at org.apache.fop.render.pdf.PDFRenderer.renderBlock(PDFRenderer.java:1329)
> at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:526)
> at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:573)
> at org.apache.fop.render.pdf.PDFRenderer.renderBlock(PDFRenderer.java:1329)
> at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:526)
> at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:573)
> at org.apache.fop.render.pdf.PDFRenderer.renderBlock(PDFRenderer.java:1329)
> at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:526)
> at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:573)
> at org.apache.fop.render.pdf.PDFRenderer.renderBlock(PDFRenderer.java:1329)
> at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:526)
> at org.apache.fop.render.AbstractRenderer.renderBlock(AbstractRenderer.java:573)
> at org.apache.fop.render.pdf.PDFRenderer.renderBlock(PDFRenderer.java:1329)
> at org.apache.fop.render.AbstractRenderer.renderBlocks(AbstractRenderer.java:526)
> at org.apache.fop.render.AbstractRenderer.renderFlow(AbstractRenderer.java:424)
> at org.apache.fop.render.AbstractPathOrientedRenderer.renderFlow(AbstractPathOrientedRenderer.java:577)
> at org.apache.fop.render.AbstractRenderer.renderMainReference(AbstractRenderer.java:403)
> at org.apache.fop.render.AbstractRenderer.renderBodyRegion(AbstractRenderer.java:337)
> at org.apache.fop.render.AbstractRenderer.renderRegionViewport(AbstractRenderer.java:282)
> at org.apache.fop.render.AbstractRenderer.renderPageAreas(AbstractRenderer.java:255)
> at org.apache.fop.render.AbstractRenderer.renderPage(AbstractRenderer.java:229)
> at org.apache.fop.render.pdf.PDFRenderer.renderPage(PDFRenderer.java:801)
> at org.apache.fop.area.RenderPagesModel.addPage(RenderPagesModel.java:113)
> at org.apache.fop.layoutmgr.AbstractPageSequenceLayoutManager.finishPage(AbstractPageSequenceLayoutManager.java:312)
> at org.apache.fop.layoutmgr.PageSequenceLayoutManager.finishPage(PageSequenceLayoutManager.java:167)
> at org.apache.fop.layoutmgr.AbstractPageSequenceLayoutManager.makeNewPage(AbstractPageSequenceLayoutManager.java:284)
> at org.apache.fop.layoutmgr.PageBreaker.handleBreakTrait(PageBreaker.java:494)
> at org.apache.fop.layoutmgr.PageBreaker.startPart(PageBreaker.java:398)
> at org.apache.fop.layoutmgr.AbstractBreaker.addAreas(AbstractBreaker.java:421)
> at org.apache.fop.layoutmgr.AbstractBreaker.addAreas(AbstractBreaker.java:371)
> at org.apache.fop.layoutmgr.PageBreaker.doPhase3(PageBreaker.java:262)
> at org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:346)
> at org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:264)
> at org.apache.fop.layoutmgr.PageSequenceLayoutManager.activateLayout(PageSequenceLayoutManager.java:106)
>
> ..........
>
> ; SystemID: file:/C:/caringo-docbook-sample/docbook/stylesheets-standard/fo/profile-docbook.xsl; Line#: 262; Column#: 54
> javax.xml.transform.TransformerException: java.lang.NullPointerException: Parameter alpha must not be null
> at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2416)
> at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:1374)
> at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:393)
> at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:176)
> at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:393)
> at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:176)
> at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2411)
> at org.apache.xalan.templates.ElemIf.execute(ElemIf.java:160)
> at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2411)
> at org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:139)
> at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2411)
> at org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:139)
> at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2411)
> at org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:139)
> at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2411)
> at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2281)
> at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1367)
> at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:709)
> at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1284)
> at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1262)
> at org.apache.fop.cli.InputHandler.transformTo(InputHandler.java:214)
> at org.apache.fop.cli.InputHandler.renderTo(InputHandler.java:125)
> at org.apache.fop.cli.Main.startFOP(Main.java:166)
> at org.apache.fop.cli.Main.main(Main.java:197)
> Caused by: java.lang.NullPointerException: Parameter alpha must not be null
> at org.apache.fop.pdf.AlphaRasterImage.<init>(AlphaRasterImage.java:54)
> at org.apache.fop.pdf.AlphaRasterImage.<init>(AlphaRasterImage.java:68)
> at org.apache.fop.render.pdf.ImageRenderedAdapter.setup(ImageRenderedAdapter.java:101)
> at org.apache.fop.pdf.PDFDocument.addImage(PDFDocument.java:823)
> at org.apache.fop.render.pdf.PDFImageHandlerRenderedImage.generateImage(PDFImageHandlerRenderedImage.java:58)
> at org.apache.fop.render.pdf.PDFRenderer.putImage(PDFRenderer.java:1745)
> at org.apache.fop.render.pdf.PDFRenderer.renderImage(PDFRenderer.java:1679)
> at org.apache.fop.render.AbstractRenderer.renderViewport(AbstractRenderer.java:743)
> at org.apache.fop.render.AbstractPathOrientedRenderer.renderViewport(AbstractPathOrientedRenderer.java:621)
> at org.apache.fop.render.AbstractRenderer.renderInlineArea(AbstractRenderer.java:626)
> at org.apache.fop.render.pdf.PDFRenderer.renderInlineArea(PDFRenderer.java:1345)
>
> ..............
>
>
> --
>
> ------------
>
> Steve Johnson, Senior Content Developer
> Caringo
>
>
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