Change default file types

I have been using Adobe Acrobat to view PDF's and it stoped working correctly. I have decided to use Preview because I don't tend to use Adobe's advanced features. But, I can't seem to get Finder to stop associating the PDF file type with Adobe Acrobat. I tried deleting Adobe Acrobat but Finder simply will not open PDF files. I tried the open with....and checking always use this as a default application, but it doesn't work. Is there some file or app that can edit file types and default applications?
Thanks,
Lee

Your personal preferences for applications/files associations are stored here:
"/Users/yourname/Library/Preferences/com.apple.LaunchServices.plist"
If that file has become corrupt then it wouldn't reflect the change you wish to make. Try moving it to the Desktop, log out and back in and try again.
Additionally, these cache files are generated by system, specifying general application/file associations, and can also become corrupt:
"/Library/Caches/com.apple.LaunchServices-014501.csstore"
"/Library/Caches/com.apple.LaunchServices-0140.csstore"
If you have additional users there will be additional csstore files, one for each user. They can also be moved to the Desktop. A restart will cause the system to create new ones.
Francine
Francine
Schwieder

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