How do I fix a broken OS X update that shows as both Available and Installed? The "Command Line Tools (OS X 10.10) for Xcode 7.0" is not working correctly.  It installs and shows in the "Updates Installed" section, however it is still listed in the "Updates Available" section.  Oddly, it's being shown in the "Updates Installed" sections multiple times -- once for each time I tried to install it.

I have restarted and it persists.  How can I fix this?
I'd go for the standard toolkit first...


In Disk Utility, "Verify Disk Permissions" and if necessary "Fix Disk Permissions".  Also "Verify Disk" and if necessary "Repair Disk".
Reset Home folder permissions &amp; ACLs using OnyX  - Maintenance tab/permissions, tick the box at the top then Execute.
Update to 10.10.5 [or re-apply if already updated] using the 10.10.5 combo update, not the delta from App Store