Canon Singapore issues advisory on Counterfeit Canon EF 50mm f/1.8 II Lenses. Here’s the link: http://support-sg.canon-asia.com/index.jsp?fuseaction=support&prod_type=notices-digitalcameras-conterfeit-ef50mmf1.8ii
Out of the blue, you’re getting twain errors, twain not found etc. Try this fix! It worked for me. Kudos to Jeff Widmer!!
https://weblogs.asp.net/jeffwids/canon-scanner-unable-to-open-twain-source
Firmware 1.1.2 update for the Canon EOS 7D Mark II is up on the USA site. Here’s the link: https://www.usa.canon.com/internet/portal/us/home/support/details/cameras/dslr/eos-7d-mark-ii?subtab=downloads-firmware
According to Canon Rumors, there is/was a Canon Service Notice for the EF 24-105 II Lens. Here’s the link for more info, details if you own the lens. http://www.canonrumors.com/service-notice-for-the-canon-ef-24-105mm-f4l-is-ii/