If you take a look at the times, you'll see that my first post and JesperMP's first post came in 8 minutes apart. I handn't read his when I posted mine, but it sort of looks like I was referring to MrPLC.com. I wasn't. As I mentioned in a different thread asking about sites other than this one, when you get Jay Anthony to answer your Omron questions, you're getting the best.
As Chris has said, I was talkinbg about vendor-sponsored sites in general, and my comment was based on my recent experience on the GE Fanuc site. I had installed the new Cimplicity Machine Edition Logic Developer PLC software for a trial run, and found that afterward I could no longer communicate with the PLC when using VersaPro. I asked if anyone else had seen the same problem and whether there was a fix. The response I got was "Upgrade to the most recent edition of VersaPro and install the most recent version of CME". In other words, spend some money to upgrade your obselete software before spending more money to migrate away from that obselete sofware.
Sorry for causing so much confusion. Chris maintains an excellent site and provides a valuable service to the automation controls community.