I can't figure it out either. I'm getting the same error and have tried repeatedly to completely uninstall all of my HP software, clean the registry, reinstall, all to no avail. I am on Windows 7. The HP scanner software has always been flaky in my experience, but now it just doesn't work at all and I have no idea how to solve this problem.
I'm getting this error with the HP PhotoSmart Premium C309g-m printer and version 140.0.14.18 of Solutions Center, the latest version available.