After clicking Continue several more times, a window opened to create a catalog. Creating the catalog seemed to work as did cancelling out of the error screen.
So perhaps the older answers on the forum (essentially to just ignore the warning) are correct and that Adobe is just putting up a more strongly worded message than in the past. As a user of every version since 2, I don't recall this tone to their messages.
Why? (in LR6 only)
1. Lightroom is on two computers "A" & "B" registered with Adobe.
2. You install and try to activate on a third computer "C" (This could be a re-install on a crashed "A" or "B" )
3. If you "Continue" to activate "C"- Adobe will De-Activate both "A" & "B" in your registration ID details.
4. Next step will be to also activate only ONE of the computers "A" & "B"
You will then have "C" & "B" or "C" & "A" ie. Two installs activated.
On-line activation is Adobe's new method of ensuring a user only ever is allowed two installs of the software.
In the notes quoted from The Lightroom Queen blog site-
- Lightroom now requires online activation.
- You can have 2 machines activated at a time. If you try to log in on a 3rd machine, it asks if you want to deactivate the other machines remotely, so you don’t have to remember to deactivate or go through a nightmare phone procedure to unlock it.
I contact with Adobe and they help me (about 5min )
Happy you had it fixed..