The answer is in front of you. You forgot your license activated somewhere. Click Transfer and it will deactivate there and activate in your new destination.
Enter in your account and see whatās going on here: Licenses
You can deactivate any user/machine/license clicking the (X) under the chosen licenses and activate the freed license again in another place.
The reason I did not click Transfer, is that I cannot understand what you call āsomewhereā. I had been working all the day on Xojo. Then I quitted Xojo; and after some time I restarted it and found that I could no more make any build (message to buy a licence or to log in).
Actually, could it be that since I had been working on a version of Xojo on an external disk, something happened as if the licence āmovedā on the external disk?
If, for any reason, your license is at some sort of clone, external disk, etc when you transfer it back you will have your machine working. Thatās not what you (should) want? Just proceed and activate your machine back.
Q: This means, in case Xojo Lite is installed on multiple boot volumes of the same computer multiple times, only one of them can be used to activate the license?
Not sure, but not important, your solo license should exist activated in just one place (probably machine:volume). Just know that, act accordingly, and everything should be fine.
I started getting the same message when I try to compile my app.
But Iāve been using and compiling it on this machine since the summer. I started getting the error when the latest Xojo release came out. I follow the steps to install and activate it again on this machine. And every time I quit and compile Xojo, it demands that I reactivate it again on the same machine.