When in Logger Pro(as of version 3.16.2), this is how you print something to a pdf format:
1. Begin the printing process in LoggerPro by pressing Crtl + P, or select "File" in the top left and then select "Print".
2. In the first dialogue box, enter any printing options (they should not affect the overall printing process) and press "OK".
3. In the next box:
I. The name of the printer may already be set as "Microsoft Print to PDF", if it is not, then select that option from the list.
II. Change or keep any properties or print ranges as you wish.
III. Check the "Print to file" box across the Comment section.
The box should look something like this(important areas marked up in red):
IV. Press "OK".
5. In the new file window:
I. You may select a place to save your file and rename the prefix. Then, edit the "File name" so that the extension after the period is ".pdf".
It should look like this(the name before ".pdf" may differ): 
II. Select "Save".
6. Your pdf file should now be saved correctly in the destination you selected(or the default) under the name that was given.