Hi Ecuestre,
Reinstalling should resolve this issue. To do this, please disconnect the USB cable and follow these steps:
1. Click on the Apple in teh uppwer left corner and then System Preferences.
2. Click on Printers & Scanners.
3. Click on the Canon printer on the left side and then the [-] at the bottom to remove it. Repeat until all Canon MG2520's are removed.
4. Close that window.
5. Click once on desktop so Finder appears in upper left corner
6. To the right of Finder, please click on GO and then "Go to folder"
7. In that box, type:
/Library/Printers/
and click Go
8. Delete all Canon folders
Next, we will install the latest driver:
1. Please use the following link:
https://www.usa.canon.com/internet/portal/us/home/support/details/printers/support-inkjet-printer/mg...
2. Click the Select button next to "MG2500 series CUPS Printer Driver Ver. 16.40.1.0 (Mac)".
3. Click the Download button. The drivers will download.
4. Once the download is complete, open your downloads folder.
5. Double click "mcpd-mac-mg2500-16_40_1_0-ea21_3.dmg" to begin the installation.
6. Follow the on screen prompts to reinstall.
7. Once complete, please click on the Apple in the upper left hand corner and then System Preferences.
8. Click on Printers & Scanners.
9. Click the [+] at the bottom. The Add window will appear.
10. In the Add window, please reconnect the USB cable and wait for the MG2520 to appear.
11. Once it does, click on it 1 time. At the bottom, next to "Use", make sure that the Canon MG2500 series is selected and then click the Add button.
Once the installation has completed, please attempt to print.
