Disregard. This has been resolved.
Per another thread, which was somewhat difficult to read due to a language barrier, I renamed the ./wp-content/uploads/wpo_wcpdf folder to “wpo_wcpdf-orig”, generated a new PDF, and allowed the folder to recreate itself. Now it’s working.
For anyone else having this issue, give that a try first.
Same issue. Not working on 4.5.1, though the plug-in says it has not been tested on that version. This appears to be the only free plug-in that does address validation. Shame it no longer works.
