It might be nothing more than a communication error - depending on the item scanned, 1200 DPI could be a LOT of data. Might just be a failure to open the data, in other words.
If you are running Wireless,
If your Wireless is less than ideal (router / printer / computer),
Communication (data transfer) limitations are more likely than if you are running through a fast Ethernet connection.
Does that matter? No, simply an observation.
What to do?
If you can do so, try saving the data as scanned.
If that works, open and edit the data later.
What happens if you scan the item using a lower DPI (try 300 DPI)?
Does this matter? Mostly it just helps you decide whether the error is perhaps due to the size of the data you are trying to open and edit before actually saving. It does not "fix" anything.
Regardless, if the application will scan the data but cannot allow edits,
If the data can be scanned and then saved,
Scan the item and save the scanned content to your computer.
Open the data (the photo / image) in photo editing software and edit.
If you have photo editing software use that to crop / correct / adjust the photo / image.
No editing software?
If you need complex editing, color correction, other capabilities,
Consider / Try
Irfanview > Brilliant Free Photo Viewing and Print Software
Irfanview provides an exceptional software experience that can be used for a variety of scan and print tasks, including the “Mirror” or horizontal flip function plus several other options not found elsewhere.
Create a Restore Point (optional, recommended)
Download the appropriate version (32bit or 64bit) of the program from the Website and install the program
Additional information at the website, including: FAQ
Both 32bit and 64bit versions for Windows are available.
Irfanview is also available as an Windows 10 Application from the Microsoft Store
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