• Improves support for Mac OS X 10.6 (Snow Leopard), OS X 10.7 (Lion), OS X 10.8 (Mountain Lion), OS X 10.9 (Mavericks), and OS X 10.10 (Yosemite). While Font Finagler 1.5 may continue to work in later versions of OS X/macOS, it is not officially supported.
• Improves support for font cache files of Adobe Creative Suite applications up to CS6. Font Finagler 1.5 can clean some — but not all — of the font cache files of Adobe Creative Cloud apps. For full compatibility, users are encouraged to upgrade to Font Finagler 2.0.
• Improves support for QuarkXPress font cache files up to QuarkXPress version 10.5.
• Improves support for Microsoft Office font cache files up to Microsoft Office 2011.
• The Font Icon Helper feature has been rewritten to work without having to modify other applications’ icons.

Enhancements:

• Font Finagler 1.5 is now properly code-signed, so when you download it in OS X 10.8 - macOS 10.14 (Mojave) and launch it for the first time, you no longer get a “This application can’t be opened because it is from an unidentified developer.” error. (NOTE: this only applies when using Font Finagler 1.5 in macOS 10.14 and earlier. In macOS 10.15 (Catalina) and later, you’ll get a “Font Finagler can’t be opened because Apple cannot check it for malicious software.” error. While this can be worked around by Control-clicking on Font Finagler’s icon in the Finder and choosing “Open” from the contextual menu (see https://support.apple.com/en-us/HT202491 for more info), users are encouraged to upgrade to Font Finagler 2.0).
• Enabled both the Font Icon Helper feature and the dfontifier feature when in Administrator-Free mode.
• Improved the ability to print the Help ReadMe and Further Troubleshooting pages; disabled ability to print views that weren’t intended to be printable (Preferences window, Font Cache Cleaner view, etc.).
• In Font Finagler’s About window, added the ability to click on the abbreviated serial number to display the full serial number.
• Font Cache Cleaner: removed the “Preserve Font Book’s disabled Fonts” checkboxes and warnings in OS X 10.7 (Lion) and later, as they are no longer necessary.
• Font Cache Cleaner: improved responsiveness of the UI while searching for font cache files.
• When you clean the OS X font cache files in OS X 10.7 and later, Font Finagler is no longer launched upon login after you restart.
• In Mac OS X 10.6 and later, warning and progress dialogs being shown as sheets no longer prevent you from quitting the application.

Bugfixes:

• Fixed a bug that could cause Font Finagler to become unresponsive after launching.
• The About Font Finagler window now updates dynamically to show the user’s (abbreviated) serial number when the user registers.
• The warning dialogs about preserving Font Book’s disabled fonts are now shown in the Administrator-Free mode as well as normal user mode.
• The warning dialogs about running Font Finagler in an unknown version of OS X are now shown in the Administrator-Free mode as well as normal user mode.
• Font Cache Cleaner: fixed a bug that would prevent the restart or shutdown alert from being shown after a system font cache cleaning, where the user had just used up their last free cleaning.
• Font Cache Cleaner: fixed the tableview’s contextual menu’s “Show View Options” menu item from being disabled in Mac OS X 10.4 (Tiger).
• Fixed a bug preventing Font Finagler’s main window size and location from being saved between launches.
• finagler: fixed a bug that prevented finagler from properly seeing registration information if Font Finagler was only registered in the user domain rather than for all users (h/t Jonathan Hoefler).
• Fixed a bug that prevented the finagler helper tool from properly being installed in Mac OS X 10.4 (Tiger).