DEVONthink 4 license invalidated

[BLUEFROG]

• You were unable to open what version? And what is the specific issue are you having with opening it?
• Of course not. There is no conversion or migration of databases between 3 and 4.

Did you read this:

READ ME – Running the DEVONthink 4 Beta

Read this if you want to run the DEVONthink 4 Beta… Firstly… Optimally, DEVONthink 4 should be installed on a separate macOS user account in its own ~/Applications directory to isolate it from other user accounts. However, if you want to run DEVONthink 4 and use it with your DEVONthink 3 databases, you need to make sure version 3 can’t be launched. In the Finder, locate the DEVONthink 3 application. Control-click it, and choose Compress… After the ZIP file has been made, delete the DEVONthink…