When trying to launch Lightroom 6, I get a message "The Lightroom catalogue named Lightroom Catalogue cannot be opened because another application already has it opened". Quit the other copy of LR before trying to launch.
However, I don't have another copy of LR opened and I do not know how to get past this warning.
Go to the folder the catalog file is in and look for a .(dot)lock file. Delete it. Make sure LR is closed when doing this.
i cant figure it out
Apparently there is a BIG problem with their software I cannot even get into lightroom