Unknown file format exception while converting word to PDF for Docx

Hi,

I am getting "Unknown file format" exception while converting word 2007 file using ASPose Word to PDF converter (in .Net). Its working perfectly if only Word 2003 is intalled on my machine. But when I installed Word 2007 same code stopped working. Its giving me this error in ConvertWordToPDF () function call. That file is having simple text. Now I have got license version. also.

ViralPatel