Please let me know what OS are you using and what version of Photoshop?
Error 150:30 usually comes up if you use timeline or any other software to migrate the files from the older Mac to the newer one or in case of licensing issues.
If you have used a migration software to transfer the files then it's not recommended. Please remove the files and reinstall Photoshop.
In case of licensing issue please follow the steps mentioned in the Kb doc :
Hi there! Because the forum you originally posted in is for beginners trying to learn the basics of Photoshop, I moved your question to the Photoshop General Discussion forum, where you'll get more specialized help.
In the meantime, my excellent husband and computer whiz reinstalled the software!