If you're attempting to install your Photoshop brushes, and you receive an error that says the not compatible or is an unknown format, it is usually because the file has been damaged during download or unzipping.
To fix this error try the following:
- Check the product page or documentation to confirm you have the correct version of Photoshop.
Delete the downloaded product from your computer.
Restart your computer.
- Download your files again and re-install.
If you continue to have difficulties please submit a support request below.