Unfortunately this did not work. In Get Info > „Open with" I changed to open with Pages and confirmed all files. Then I tested the double click on a Word-file, but still it is opened in PF.
I also chose PF and confirmed all files, after this back to Word (also confirming all files). That did not work either.
Could you send us a sample (a snapshot) of PathFinder process in a separate file - this will enable us to analyze what happens with the application. Here's how to get it:
Open Path Finder and reproduce the problem.
Open Activity Monitor from the /Applications/Utilities folder.
Select Path Finder in the process list. To help making a selection, type "Path Finder" in the Filter field.
Click the Sample Process button in the toolbar - this will open a new window entitled "Sample of Path Finder" and a sample of the process is collected. Ideally try to open the Word file as the sample is being collected.
Click Save and save the sample file.
Close (Command-W) the Sample window opened in step 2.