Avid, the makers of Pro Tools, have announced Pro Tools 12.3.1. Pro Tools users with an up to date Pro Tools 12 perpetual licence or plan can find the update in their Avid account or via the Avid Application Manager. Here is the complete list of changes. 

Pro Tools 12.3.1 Bug Fixes

Commit

• "Commit Up to This Insert" no longer fails to trigger the Auxiliary Output Stems dialog. Using this feature on a track hosting an assigned multi-output plug-in will now cause all dependent tracks to be committed up to the same insert
• A commit operation that would cause the maximum track count to be exceeded no longer crashes Pro Tools - instead the operation is prevented

Broadcast

• Using Pro Tools to change a clip and file name of audio media stored on ISIS and managed by Interplay no longer causes Media Offline in Media Composer

Video Engine

• Video Engine output of all Satellite systems properly return to the play start point when playing a timeline selection from start to end with Insertion Follows Playback disabled 
• Fixed a case where play start is delayed when the Video Engine is enabled (HD Native) 
• Eliminated some instances of erroneous missing codec errors when importing video files
• Sync points added to video clips are no longer invisible

Audio Engine / Bounce

• Fixed a case where restarting playback while the transport was already running could cause a noise burst 
• Fixed a case where solos are ignored after running an offline bounce
• Fixed a case where signal could bypass a master fader after an offline bounce
• Fixed cases where Bounce to Disk of surround outputs would not create an audio file

Miscellaneous Fixes

• Transport Record lock no longer fails to keep the transport record enabled in Destructive Punch record mode
• Copy to Send menu is no longer missing in Pro Tools Standard
• Memory Locations window no longer fails to show ticks when displaying marker Bar|Beat timeline locations
• MIDI offsets entered in the Global MIDI Playback Offset dialog no longer fail to offset MIDI
• Custom Disk Allocation settings are now saved with session templates
• Mix Groups can be deselected in the Edit Window
• Group display options are now saved with the session
• When using the "new track…" option to route track output path to a new track, custom names are not overwritten when changing track type
• Session names typed into the Create page of the Dashboard will no longer be overwritten when checking "Create From Template"
• The "Quantize Clip to Grid" command (Cmd+0, Ctrl+0) no longer fails to be executed when using the numeric keypad "0"

Elastic Audio

• Elastic Audio analysis markers are no longer locked in place in Analysis track view
• Grid lines are now shown on tracks set to warp or analysis track views

Crashes and Errors - Please continue submitting crash logs!

• Browsing the Project Audio Files folder in the Workspace no longer causes Pro Tools to hang in sessions with many audio files
• Fixed a case where Insert Silence would cause Pro Tools to hang
• Fixed a case where using the Match Tracks and "Overlay…" playlists options in the Import Session Data window could cause Pro Tools to crash
• Fixed a case where Pro Tools would crash when closing a session
• Fixed a case where moving a virtual instrument insert with assigned auxiliary output stems could cause Pro Tools to crash 
• Attempting to move video clips from a locked Video Track with the Object Selector no longer crashes Pro Tools

Localization

• Fixed alignment issues of the Save Session Copy dialog that affected most languages
• Improved translations for Import Video dialog, "Preview" processing tooltip, and Plug-in Preset save-as warnings

Pro Tools 12.3.1 information can be found at Avid.com