If you've got both the 64-bit and 32-bit versions of Photoshop installed then the 64-bit version will be used by this button.
If you need to use the 32-bit version instead (e.g. for 32-bit-only Photoshop plugins) then see this thread.
If you've got both the 64-bit and 32-bit versions of Photoshop installed then the 64-bit version will be used by this button.
If you need to use the 32-bit version instead (e.g. for 32-bit-only Photoshop plugins) then see this thread.