Error opening pdf

[GTNixon]

I received the following error when opening a pdf file: "Error [PXVLib]: unsupported file format". How do I resolve this?

[Paul - PDF-XChange]

Hi, GTNixon

thanks for the post. This can be triggered by a corrupt file, and recently we have seen issues where it can happen when the file is saved to a folder that is synchronized cloud storage. We are testing a fix for one such issue with SharePoint.

Are your files on a sync'd folder and if so does it work to save it elsewhere locally first?

Also, please make sure you are testing the current version, 10.8.2.407.

I am keen to hear how that goes.