Photoshop

Some screenshots would also be helpful, along with the additional details already requested.

Please be more detailed and decribe what you try to do. We need also informations about your environment. 

Did this work before? If yes, waht has been changed on your system before the error occur?

Please provide a copy of your 'System Info'. This can be get from the Photoshop menu item Help > System Info. There's a copy button in the System Info dialog. Press this button and paste the info into your next forum post.

In the meantime you cab try to reset the preferences of Photoshop using the steps described here:

https://helpx.adobe.com/photoshop/using/preferences.html#reset-preferences

It's recommended to backup your settings before resetting the preferences.

See here:  https://helpx.adobe.com/photoshop/using/preferences.html#backup-photoshop-preferences