You can't open the application "Image Capture" because it is being updated.

TigerA wrote:

Recently reinstalled High Sierra on a mid-2011 iMac 27" and applied all latest updates to 17G14042.

The iTunes & Image Capture apps both had the issue of "You can't open the application xxxx because it is being updated". I fixed the iTunes by downloading and re-installing. But I can't find the Image Capture app anywhere.

To get around this issue, I right-click the Image Capture app - Show Package Contents, then click Contents - MacOS - Image Capture, to launch the app successfully.

The question is how it can be fixed properly, without re-installing the entire macOS?

P.S. also tried disk repair in Disk Utility with no effect.

Image Capture app is built into High Sierra and if damaged may result in what is being experienced.

Restart the computer in Recovery Mode Command + r immediately at restart and choose Reinstall macOS. This will require and active and functioning internet connection. For best results connect via Ethernet Cable to Router.

The reinstallation will bring down the full installer and commence the installation. It should replace any missing or corrupted / damaged elements of the OS without make changes to instaledl applications, personal data or settings.

Good trouble shooting work done there ; -)