Your problem, as described, appears to have nothing to do with Windows Live Mail.
This is not a general advice forum. You need to ask elsewhere for help about the fault you describe.
You can contact Microsoft staff, in a live chat, to request general help with using Windows 7 or 8 or 10, at the following link -
https://support.microsoft.com/contactus
Alternatively, there are various advice forums, where ordinary users answer questions about a wide range of software and hardware problems. Go back to the 'Ask a question' page, and choose a different product and/or topic from the drop-down lists there.
You can find the 'Ask a question' page through the link of that name at the top of this page.
In fact, it looks to me as though you have tried to edit an image stored on a network drive. This is often impossible -- you won't have the necessary permissions (for security reasons, you cannot save a file to a network drive unless you have a write permission: you obviously don't have that permission). You therefore need to copy the image file to your local disk, and save it there.
It is only the final (save) step that has failed, due to you having no permission to write to the network shared resource.