Folder Icon Cleaner 2.02 David Himelright writes: "After running Folder Icon Cleaner, Disk First Aid reports every nuked custom icon as a problem on my HFS disk." Repairing the disk with Disk First Aid solved the problem.
TechTool 1.1.5 TechTool 1.1.5's System Analyze feature does not work with 8.1 (no surprise here). The entire application seems to have problems with HFS . An update will be needed.