The current version of pdf2cad is v11 build 18.104.22.168
If you do not know your version, launch the software and click “Cancel” to by pass the file selections screen. Click on the box with two arrows in the lower left of the window. It will inform you of your version and build number. If you do not have the latest build, you can Upgrade or purchase a 1- or 2-year Advantage Support Subscription which ensures you always have the latest version and support if you need it.