Tablet has just been updated to version 1.13.07.31.
NEW: Tablet's codebase is now Java 7 across all supported platforms. NEW: Moved OS X over to the Nimbus look and feel. NEW: The number of per-read mismatches against the reference is now shown in the tooltip. NEW: Tablet no longer prompts for updates if it can’t write to its installation directory. BUG: Solved some issues with Tablet misbehaving when the cache folder's location changes. BUG: Opening a BAM file (with index) from the command line caused samtools to fail.