SynthFont has been updated to version 1.557.

Bug fixes:

• Since version 1.552 some notes have tended to remain playing after note-off although they were mostly silent already and did not contribute anything. This caused the polyphony to rise and the system to slow down.
• Master Fine and Coarse Tuning did not always work.
• The two latest versions have often experienced a not fatal exception at start-up.
• Exclusive Class for percussions did not work when short-cutting of overlapping notes was switched off.
• A large number of other minor bugs fixed.