PDF Assembly is not working for ddx :Unable to select font for character U+54 'T'

Hi ,<br /><br />   I am getting the following error while generating the pdf. :<br /><br />Caused by: com.adobe.livecycle.assembler.client.ProcessingException: ALC-ASM-S00-002: Failed to execute the DDX - error messages provided.<br />     at com.adobe.livecycle.assembler.AssemblerServiceImpl.makeResult(AssemblerServiceImpl.java:6 74)<br />     at com.adobe.livecycle.assembler.AssemblerServiceImpl.execute(AssemblerServiceImpl.java:410) <br />     at com.adobe.livecycle.assembler.AssemblerServiceImpl.invokeDDX(AssemblerServiceImpl.java:29 0)<br />     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<br />     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)<br />     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)<br />     at java.lang.reflect.Method.invoke(Method.java:615)<br />     at com.adobe.idp.dsc.component.impl.DefaultPOJOInvokerImpl.invoke(DefaultPOJOInvokerImpl.jav a:181)<br />     ... 33 more<br />Caused by: com.adobe.internal.ddxm.DDXMException: DDXM_S18005: An error occurred in the PrepareTOC phase while building <TableOfContents>. Cause given.<br />     at com.adobe.internal.ddxm.task.toc.PrepareTOC.execute(PrepareTOC.java:234)<br />     at com.adobe.internal.ddxm.blueprint.BluePrint.postExecute(BluePrint.java:306)<br />     at com.adobe.internal.ddxm.ddx.Node.execute(Node.java:353)<br />     at com.adobe.internal.ddxm.Executive.execute(Executive.java:244)<br />     at com.adobe.internal.ddxm.Executive.execute(Executive.java:192)<br />     at com.adobe.livecycle.assembler.AssemblerServiceImpl.execute(AssemblerServiceImpl.java:408) <br />     ... 39 more<br />Caused by: com.adobe.internal.pdfm.toc.TOCServiceException: PDFM_S18001: The operation of producing a table of contents failed.<br />     at com.adobe.internal.pdfm.toc.TOCServiceImpl.formatTOCContent(TOCServiceImpl.java:1877)<br />     at com.adobe.internal.pdfm.toc.TOCServiceImpl.getNumberOfTOCPages(TOCServiceImpl.java:1681)< br />     at com.adobe.internal.ddxm.task.toc.PrepareTOC.execute(PrepareTOC.java:217)<br />     ... 44 more<br />Caused by: com.adobe.fontengine.inlineformatting.FormattingException: Unable to select font for character U+54 'T', Requested attributes:Family=Arial|Size=12.0|Stretch=normal|Style=normal|Variant=normal|Weight=400|O TFDiscretionaryLigatures=minimum|WritingMode=lr-tb|BidiLevel=0|ScaleToFit=1.0|Shift=-none- <br /><br />would appreciate if anybody can help on this..<br /><br />Thanks & Regards<br />Masthan Shaik