Some mockups like Sealed Bags need 3D features in Photoshop to work. Check if you are able to run our 3D Mockups by running this test before you buy. Follow the instructions in the PDF "How to Check 3D Compatibility" that comes inside the package.
Get the 3D Compatibility Check package from here:
The Compatibility Check is a low resolution version of our mockup Fabric I. Get it at 8K in our Freebie Warehouse here.