Hi Mark,
could this be related to a European Model G11? Please bear with me since I got my G11 only three days ago.
I also had problems while trying to help nachin by making him a backup from my new G11. Here is what I experienced:
First I installed the Dilard 2.1 demo. The 'Projector Detector Wizard' seemed to work. After a short while it came up with the communication settings, ROM version, serial number and a selection of possible matching models. The G11 was not in that list however. The only JVC model listed was the G1000. A serial number different from the one on the case was shown and the ROM version indicated was 1.0.0.
I then tried Dilard v2.2 which I installed over the 2.1 installation. This time the 'Projector Detector Wizard' came up with the same results (serial, ROM version, etc.), except that the list of possible projectors was longer and did include the G11 this time.
That encouraged me. So I manually selected the G11 and went right to the backup wizard. I selected the projector itself since I wanted to backup everything. Then I started the backup process.
The backup procedure seemed to work fine. The status window indicated that data was read from the G11. The projector was also turned on, just as expected. In the end I was offered to have the projector turned off again. After I clicked [Yes] the G11 turned off.
Now comes the troublesome part: Dilard popped up a time out error stating that the backup could not be completed entirely (Sorry, that were not the exact words. I am quoting from memory here and it was almost 3 am when I tried this

). Nevertheless a backup file was created (~16KB in size) and the report option did show some data which made sense. For example the bulb timer data was spot on.
Ok, this is the story of my very first attempt of using Dilard. Now I am very anxious to learn where the source of my problem is. To summarize:
1) the projector model could not be detected properly
2) the detected serial number does not match
3) the detected ROM version is questionable
4) the Backup Wizard gives a time out message in the end
Especially 2) makes me quite a bit nervous. If I had not purchased that G11 directly from JVC Germany, I would suspect that somebody may have tampered with the unit. But, hopefully, it is only that Dilard does not know about my specific European G11 flavor.
Mark, perhaps you can shed some light on this? If you are interested in getting to the bottom of this, I would be too and help you in every way I can.
Cheers
Mike