PDF Architect not responding

Since I downloaded and installed the most recent update, I open a PDF file and I have the little spinning donut…forever. I can see the file but I can’t do anything with it. I have the not responding message at the top of my window. Apparently it’s not fulling loading. Is there a patch to fix this?

Apparently the problem was because I was opening the file from Dropbox. I copied it to my desktop and it opened normally. Lesson learned.