Its often very tedious to read the huge error message in a pop up window which is not selectable and re-writ eit a forum or email for help. free-ocr.com allows you to upload any image containing the text and extract the text in an editable format for further usage.

There are several OCR software available (http://code.google.com/p/tesseract-ocr/) but this is a web based tool which needs no download and installation.

This can also be used for Converting a scanned document to editable text.