You have just done a search in Worldox, and you are going through your results.
You open up the preview pane on the right hand side, however, when you get to a pdf document, you have to click “Click to view”
The reason Worldox did this is because some PDFS are huge and take a long time to load. I like to change it so the pdfs automatically load, and I will just deal with a big PDF when I get there.
Step 1: Right Click over the click to view blank space and select Set Click to View
Step 2: Change the option to Preview Immediately