• Modo Bake Presets are now auto-installed and no longer need to be installed separately

• Swap Nodes has additional logic when launching it with a Blend Mode Node selected. It will show you other Blend Mode Nodes first in the list.
  
  
• Reload Paint when run with a Patch Selection active, will now ask if only to reload previously imported paint for the selected Patches or all Patches of the Model
  
  
• The Nodegraph right mouse click menu has been reorganized and new groups have been added, to cope with Extension Pack's expanding toolset

• A Projectors Camera Position and Rotation can now be updated from the current Viewport Camera by right Mouse Clicking on it and using the "Update Projector Camera" Option
  
  
  
  
• All loaded Projectors can now be removed in one click using the new "Remove All Projectors" Option
  
  
  
  
• You can now batch rename Projectors with a flexible renaming tool, via the new "Multi Rename Projectors" Option
  
  

• A new "Remove unused Selection Groups" has been added to the Selection Groups Right Mouse Click Menu. 
  It will remove any Face Selection Group that no longer belongs to an Object or Object Version.

• You can now batch rename Selection Groups with a flexible renaming tool, via the new "Multi Rename Selection Groups" Option
  
  

• Several actions previously only available in the Right Mouse Context Menu, have been added as Buttons to the Channel Palette e.g.

• Duplicate Channel
• Flatten
• Duplicate & Flatten
• Import into new/current channel

• The "Ingest Images into Node/Layer" option, available in the Image Manager, will now always prefer EXR Files if two identical files are selected with their only difference being their File Type.
  
  
• A new "Optimize Loading" Checkbox has been added below Image Attributes to the following nodes

• Axis Projection
• Image
• Cylindrical Projection
• Infinity Tile
• Tile Extended

When ticked on, the Node will only evaluate if an image is assigned in the image attribute.
If it finds that no image is assigned, Node evaluation is skipped and it falls back to the Base Color Values of the Node.

The checkbox is off by default for newly created Nodes, on by default for Nodes used inside Material Templates

• The Arnold Material Presets in the Shelf now default to a Diffuse Weight of 1.0 instead of 0.8
  
  
• The Axis Projection Node now allows UV Offsets per Projection Axis

• The Nodes "Remap Color (AL)" and "Remap Float (AL)" have been renamed to just "Remap Color" & "Remap Float"
  
  
• The Node "Grade+" has been renamed to "Grade (Masked)" to be in line with the naming of other masked adjustment nodes
  
  
• A new node "Object Center" has been added, that returns the object center world space coordinates as RGB Values
  
  
• The Color Range to Mask Node(s) now have a second output called "Mask". This output always gives a black and white mask regardless of what is set in the Preview group or if "Grade Mode" is turned on
  
  
• Descriptions and Tooltips have been added for all Extension Pack Menu Actions. In the Status Line, Extension Pack Actions are prefixed with [EP]
  
  
  
  
• All Extension Pack Main dialogs are now prefixed with [EP] in the Title Bar
  

• Extension Pack's own Symmetry Painting has been deprecated as Mari by now has its own, superior Symmetry Painting
  
  
• Extension Pack customized Tools Toolbar Versions (can be activated in the Preferences) now include the Mari 6 Roller Brush.
  If you are already using a Extension Pack Tools Toolbar, it will automatically update after a Mari Restart.
  
  
• The "Shelf from Folder" Option will now be added to the Mari Shelf on Mari Start .. not as before only when a project is open
  
  
• The Text Tool for now has been placed into the Extension Pack Toolbar, to avoid a crash on Mari Exit when the Text Tool was registered to the main Tools Toolbar.
  
  
• You can now clear your Undo history via the Extension Pack Menu, under the History Submenu / Clear History
  
  
• You can now manually resume your Undo history via the Extension Pack Main Window Menu, under the History Submenu / Resume History.
  While rare, sometimes (due to Bugs) your Undo History Recording might stop. This action will resume it without the need to restart Mari.
  
  

• Saved custom Brushes were deleted from the shelf on each Mari restart

• The Text Tool when registered to Mari's Main Tools Toolbar caused a crash when exiting the Mari Application. Until a fix is supplied
  by the Foundry, the Text Tool is now located in the Extension Pack Toolbar.
  You can also use one of the alternative Tools Toolbar Layouts shipping with Extension Pack, which still include the Text Tool in the Tools Toolbar.

• Loading of custom Environment Map Paths on Mari Startup could fail and hang if Thumbnail or Cache Data was contained in the Folder

• The Environment Variables MARI_EP_PREVENT_MARI_HDRI_LOADING and MARI_EP_PREVENT_3RDPARTY_HDRI_LOADING were no longer respected

• In some cases the Extension Pack startup install Progress Bar could get stuck and not close on its own

• In some cases the Extension Pack startup install Progress Bar would pop up, and go straight to 100% even though noting was being installed

• The Mari Preference "Background Exporter" was being forced to "Fast Exporter" on each Mari Restart.

• Having multiple users use Extension Pack on the same machine could cause file ownership clashes.

• Some files on Linux had incorrect permissions when written. All files are now written with 777 permission (read/write for all)

• On Windows Machines, pointing the Environment Variable MARI_EP_LICENSE_FILE_PATH directly to a (unmounted) network location no longer worked 
   and required network drive mounting as workarounds.

• The "Setting Up Extension Pack" Progress Bar got launched with "Installation of Mari HDRIs" even if Mari HDRI's where already installed

• Deleting a single HDRI Image from the default HDRIs installed to the shelf, would install that missing HDRI on each restart .. over and over, creating duplicates.

• Indie and Freelance Licenses were incorrectly identified as Studio Licenses in the Licensing Dialog.
  
  
• Changes to a Hotkey assignment on an action added by third party (e.g. any Extension Pack Action) were 'forgotten' after a Mari restart.
  
  
• The Hotbox Manager displayed a __pycache__ subfolder for Hotboxes containing Python Actions

• The Light Hotbox kept resetting itself to the default F4 Hotkey on Mari restart, even when changed by the User

• The Hotbox 'Aiming' no longer pre-selected a button unless the aiming line was crossing a button or the cursor was over the button
  
  
• On Linux, Hotboxes  could appear with a black background instead of a transparent one
  
  
• Multiple Extension Pack Actions (e.g. Swap Node Type, Swap Layer Type etc.) created multiple Undo entries when executed. 

• Some Extension Pack Dialogs (e.g. Connect to Radio Transmitter) had their contents cut off when a larger custom font size was set via the Mari Preferences 
  
  
• The Substance Baker Bridge did not correctly import bakes, if the Importer Mode in the Mari Preferences was set to "Background Impoter"
  
  
• Dragging a manually imported Shelf Image into Layerstack or Nodegraph would print a python error.

• Some Image Types from the shelf could cause an 'Image not Found' error when applied to a Node via Drag & Drop

• Dragging an Item from the Preset Browser into the Nodegraph would under certain conditions place the nodes at the position of the cursor but mirrored across one coordinate axis of the nodegraph (so very, very far from the cursor)

• Dragging an Item from the Preset Browser would add the original sized thumbnail to the cursor to indicate a drag & drop event. If the thumbnail was very large, this could obscure and hinder visibility in the area where the user wanted to drop the item

• Paint Through Image Mirror Options were not added to the Paint Through Tool Toolbar, if the tool was activated by dragging an image into the canvas
  
  
• Copy/Pasting Node Attributes would clear the clipboard after pasting, allowing only one paste action to be performed
  
  
• Copy/Pasting Node Attributes would paste Image Attributes in a way, that new image instances would be loaded into the image manager
  
  
• Adding more than 7 Applications to the 'Open with ...' Image Manager dialog did not work and would cause Mari to error on start
  
  
• In some cases using 'Align Nodes' would stop the Undo History Recording
  
  
• Node Aligning could give a python error in some cases
  
  
• Node Align Right sometimes aligned nodes to the 'average center' of the node selection instead of the far right.
  
  
• Node Align when run on a single Node connected to multiple nodes, would only align itself to the last node of the chain.

• Node Align could produce undesirable results if the reference node was a dot node.
  
  
• Project Template import progress Dialog would not auto-close when finished when specific import settings were chosen
  
  
• Patch Bake to Image Manager could fail if the node to bake had  illegal characters in its name that the operating system cannot write into a filename
  
  
• Due to a Mari Bug, some tools were showing already deleted channels (e.g. Channel Exporter). Interacting with those deleted channels could cause Mari to crash. 
  A workaround for the bug has been implemented to prevent these Channels from appearing in Extension Pack tools.
  
  
• Export Custom Channel Selection could error and hang when no Raw or Utility-Raw Colorspace was found in your OCIO file. Extension Pack will now try to resolve the issue
  on its own, and if unable give you a warning message.
  
  
• Export Custom Channel Selection could error and hang processing Bake Points containing invalid, non-existent UDIM numbers in their Bake Range
  
  
• Export Custom Channel Selection would export the wrong channel information if the channels to export were connected to a mutliChannel Output Node and an export Mode other than "Full Resolution" and "Default Bit Depth" was chosen.
  
  
• Dragging a Preset from the Preset Browser, could show an overly large Thumbnail on the Cursor, obscuring areas of the target drop area (e.g. Nodegraph or Layerstack)
  
  
• Duplicate & Flatten Channel would not rename a channel correct when set to "Duplicate then flatten Original"
  
  
• Material ID from Selection Groups would fail, if invalid characters (e.g. '/', '%' etc.)  were present in the Selection Group Name while baking Geo Channels.
  
  
• The "Levels" Dropbox was disabled when "Inherit from Source Object" was ticked on in the Subdivision Dialog
  
  
• The Extension Pack Toolbar disappeared when loading or resetting a Mari Layout

• the 'Garbage Collection' command in the Extension Pack / Project Menu gave a python error
  
  
• The Function Node "Discreet AB" gave a shader compile error.

• Some nodes added a 1 degree rotation in the data transmitted in their alpha channel for Normal Map rotation
  
  
• The Axis Projection node had a very slight offset from the center of the object when in "Center" mode. This change will only apply to new node instances.

• The Axis Projection Node's "Bottom Alignment Mode" was mirrored across the X Axis. This change will only apply to new node instances.
  
  
• Pattern Generator 2D Nodes did not recalculate Normal Map orientation, if the rotation values were fed into the node via a Manifold Node
  
  
• Pattern Generator 3D Nodes did not recalculate the Normal Map Orientation, if the Projection Axis was modified.
  
  
• The Manifold3D Node when controlled via a Locator was giving inverted results (e.g. moving locator up would translate result down)
  
  

• Doc strings have been unified across the entire API
  
  
• Extension Pack's Python API Documentation is now dynamically generated on build, from the Doc Strings
  
  
• Apart from the Online Version, Extension Pack's Python API Documentation is now also available via the Help / SDK / Python Menu
  
  

• The SSL_CERT_FILE Environment Variable is now automatically set for the environment Mari is run in, on Linux Systems where the SSL Certificate is located
  in default locations
  
  This is to avoid issues that have come up in the past with Mari's shipping  SSL Certificate on Linux being outdated, causing issues during e.g. Extension Pack
  Licensing.
  
  If the SSL_CERT_FILE Env var is already set, no action is taken.

The "Chappie"  Demo asset used in Tutorials and Help Files has been been kindly supplied by:

• John Olifinsky (Modeling) - Artstation
• Johnny Fehr (Texturing) - Artstation

The 'Leviathan' Demo Asset used in Tutorials and Help Files has been kindly supplied by Think Tank Training Center.

• David Letondor (Modeling) - Artstation
• Paul H. Paulino (Texturing) - Artstation

3D Scans were kindly provided by

• Clear Angle Studios UK - Website