NullPointerException on using column-count feature

[devOp1]

When using column-count in CSS i am getting the following error on version 1.0.10. Tested with example columns-floats-unbalanced.. Is that a problem with my version?

Exception in thread "main" java.lang.NullPointerException at org.apache.pdfbox.cos.COSArray.add(COSArray.java:62) at com.openhtmltopdf.pdfboxout.PdfBoxAccessibilityHelper.finishNumberTree(PdfBoxAccessibilityHelper.java:858) at com.openhtmltopdf.pdfboxout.PdfBoxFastOutputDevice.finish(PdfBoxFastOutputDevice.java:908) at com.openhtmltopdf.pdfboxout.PdfBoxRenderer.writePDFFast(PdfBoxRenderer.java:674) at com.openhtmltopdf.pdfboxout.PdfBoxRenderer.createPdfFast(PdfBoxRenderer.java:564) at com.openhtmltopdf.pdfboxout.PdfBoxRenderer.createPDF(PdfBoxRenderer.java:490) at com.openhtmltopdf.pdfboxout.PdfBoxRenderer.createPDF(PdfBoxRenderer.java:427) at com.openhtmltopdf.pdfboxout.PdfBoxRenderer.createPDF(PdfBoxRenderer.java:409) at com.openhtmltopdf.pdfboxout.PdfRendererBuilder.run(PdfRendererBuilder.java:46) at com.dotcloud.openhtmltopdfrunner.PdfBuilder.generate(PdfBuilder.java:139) at com.dotcloud.openhtmltopdfrunner.OpenHTMLtoPDFRunner.main(OpenHTMLtoPDFRunner.java:29)