I foolishly installed iTunes 12.7, and now find that I am unable to install a development/QA version of my company's app for testing. After downloading the IPA, I am following the steps found on Apple's support page, under "Manually add items from your computer."
There, I'm told to drag the IPA file to the iTunes sidebar, like so:
But when I do exactly that, it tries to create a shortcut, and fails (the section of the sidebar blinks several times):
This is in iTunes 12.7, to an iPad mini 4, iOS 10.3.3. Manual management is enabled: