You do not always need a full reinstall. Windows includes built-in repair tools. Follow these steps before downloading a new setup file.
echo Re-registering DLLs... regsvr32 /s "C:\Program Files\Kofax\Power PDF Advanced\PDFXEditCore.dll" regsvr32 /s "C:\Program Files\Kofax\Power PDF Advanced\OCR\OCRModule.dll" kofax power pdf advanced 41 fix download