Copy the below code and save it as regpdfdll.bat on your system.
Open an Administrator Command Prompt:
Click the Start button and type Command in the search text box. Command Prompt will be one of the search results. Right click Command Prompt and select Run as administrator.
In the Command Prompt go to where you saved the batch file and type it's name at the command prompt and hit enter. If all goes well this should register the dll file on your system. You will need to close and restart P&GD7 if you did not have it already closed.
Code:
CD \windows\syswow64\
regsvr32 "C:\Program Files (x86)\Xara\Xara_Photo_Graphic_Designer_7\Filters\PDFFilter\PDFFilter.dll"
cd \
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