I've added E:\Portable as well as several subfolders that contain my unzipped portable apps at History & Settings | Custom Locations (including E:\Portable\CCleaner_615_OLD - see attached image) but when I run a scan UCheck Free Portable v4.10.2 only detects the 47 'installed' programs on my C:\ drive and does not detect that I have an outdated version of CCleaner Free Portable v6.15 on my removable USB thumb drive.
As a test I unzipped an outdated version of CCleaner Free Portable v6.15 in a folder called E:\Portable\CCleaner_615_OLD.
These portable apps (including free versions of CCleaner, HWiNFO, Revo Uninstaller and TreeSize) are located in a folder called E:\Portable in their own subfolder (e.g., E:\Portable\CCleaner, E:\Portable\HWiNFO 7_62, etc.). I have ~ 25 portable apps that I run from a removable USB thumb drive. Does this mean it can now check for available updates for portable apps? If so I can't get this feature to work correctly. According to the release notes for UCheck v4.10.2 at this app now has ' Added support for portable links'.