Problems with PDF files processing in SDL Trados

As you all know, processing files in PDF format is a whole world on its own. I personally hate PDF's but it is an unavoidable truth. It is argumentum ad populum that in most cases dealing with a PDF is easier by OCRing it than trying to convert with Solid PDF converter, SDL Trados Studio for translation, or any other tool. Still not all cases are lost and sometimes the famous pretweaking error can be caused by other factors. Go here to find one of the solutions.