No file created means that it was not able to create an output file. This could have a number of reasons: One is that it was not able to create the output file (e.g. because of file permissions). Another reason could be - as I indicated earlier - that the PDF file is corrupt.
Just to make sure that we are not going on a wild goose chase, can you please try to convert this file:
This is a very simple PDF file that definitely can be converted to Word. Download the file and put it on your desktop, then when you select the output file name, also put that on your desktop (this assumes that you can read and write from/to your desktop).
Do you get the same error?
If so, maybe it's time to repair your Acrobat installation: On Windows, you will find this option under the Help menu.
Karl Heinz Kremer
PDF Acrobatics Without a Net
PDF Software Development, Training and More...