I have PS Lightroom 5.3 running on Windows. On Windows 7 it ran fine on Windows 8.1 it runs even more quickly! However, it will not now print to my Canon MP610 (latest driver installed). It requests me to allow bidirectional communication in the printer properties but there is no such item in the printer software. Same for PSE11. All other applications, e.g. MS Office, Xara, Page Plus work fine. I would welcome your comments. Thank you.