Ken
November 5, 2025, 9:34pm
42
Hey Praxinos!
I’m learning Odyssey, and it’s been so much fun, but I keep coming across an issue where my Undo/Redo is disabled.
When I go to Unreal’s Edit dropdown, both the Undo & Redo Buttons are greyed out and say, “Can’t undo while ‘change cell exposure’ is in progress” and another time while “Adding Cells” is in progress.
I noticed this happens when I simply create a new layer within a shot or adjust a cell’s exposure. I can draw, erase and use tools on my layer, but my undo and redo tools are greyed out. This seems like a bug (though it could be user error, haha), unless enacting these features puts you in an “editor state” that you have to exit, but that doesn’t seem to be the case from what I can tell with anything UI related. I was able to get the undo/redo working again once, but I can’t remember what I did to fix it, and have been unable to replicate it. I’ve been testing every option I could think of.
Do you have any ideas what this problem might be?
I also emailed you guys through your website for this same issue.
Also, do you know if your Discord no longer exists? All links on your website and the Unreal demo videos lead to an error page.
Thanks so much!
Hi Ken! Thank you for your message and sorry for the inconvenience!
I will report this bug to our dev team. In the meantime, you can “fix” it by opening the History panel (in Edit) and clear it by clicking on the tiny bin icon at the bottom left corner.
It will remove the entire history, but at least, it will “reset” the undo.
BTW, can you confirm you were using the version 3.8.56?
Our links seems to work here.
I will look into the bug you mentionned.
Hello there, Odyssey v4.0.57 is now out !
Odyssey v4.0.57 Changelog
Here is the changelog :
Update to UE 5.7 !!
Also, here some nice tutorials here :
VIDEO
VIDEO
You can now have an access to templates in UE5.7, after installing Odyssey to this engine’s version:
TheGoodwin
November 27, 2025, 1:35pm
48
I love Odyssey and plan to incorporate it into my classes. It will really empower the student to freely explore and test their ideas.
I have a question regarding external drawing devices.
Is it possible to use an iPad as the input device for drawing? Perhaps using Live Link or similar control setup?
1 Like
Thanks for asking and for your kind message! (sorry for the slow answer though, we’re more active on our Discord).
Any classical graphic tablet works fine with Odyssey, both on Mac and Windows. Regarding the iPad Pro, I must admit it’s something we never tried so I cannot tell. I believe you’ll be able to draw, but I don’t know how data like pressure or tilt will be passed along.
Hello there, Odyssey v4.1.57 is now out !
Odyssey v4.1.57 Changelog
Here is the changelog :
New features:
Add Tool Collection panel and asset
Add a Raster Liquify Tool
Allow animation cells to be named
Allow to display Cell’s exposure count at the end of the Cell
Allow animation cells to have multiple marks
Add a “Selected Layers” source option in the Export Image Sequence Dialog
Add a shortcut to Perspective option for Transform Tool
Improve shot section animation title toolbar to prioritize options instead of title
Transform Tool in Vector Layers should allow to resize from the center of its Gizmo
Add Current Layer Blend Mode shortcuts
Palette : Better visual distinction between RAW and Indexed color modes
Allow ShotSequence to use template sequences
Create a shortcut to rename Vector PaintGroups
Use SM6 Shader Model by default in Odyssey Template Projects
Update Blend2D lib to latest version
Import/Export xdts format
Add black line in the UI when using the PenBrush on vector based layer
Bugfix:
Crash when exporting as storyboard in jpg/png
Crash when using cross fade on a single cell (with multiple exposure)
Crash when selecting a layer
Can no longer build plugin for runtime
GetAltitude & GetAltitudeNormalised are not giving correct values
2D Animation Widget: paths are reset when changing layer type
Moving the MarkIn of a Shot sequence sets it to an invalid value
Project Templates are not displayed in the Project Browser
Wrong Localization for “Viewport” in French and Japanese
Make animation cut property “transient” (in timeline section) and rebuild it during PostLoad
Transform tool issue with Rotate + Shear
Storyboard: it has troubles selecting and showing the right Camera view and paint on the right Animation Actor when - creating new camera or plane
Changing exposure of cells doesn’t change the frame on witch the animation ends
Shortcut for Brushes [Num +] and [Num - ] to change brush size doesn’t work efficiently
The widget to manage “Animation Distance” (in 3d viewport) is hidden/displayed at wrong times
Display bug with the eraser on a vector layer
Remove difference in behaviour between bitmap and vector Transform Tools, when using the [Enter] key.
When using the eraser tool on a Vector layer, the shortcut to Pan/Zoom/Rotate the canvas doesn’t work.
Rename Raster Drawing Tool Smoothing Options to remove dedundant use of the word “Smoothing”
Glitch when using Vector Bucket Linear Gradient
Vector Paint Bucket Radial Gradient is not working anymore
Wrong localization in Paint Bucket Tool tooltip “Erase to intersection (CMD)”
Crash in Vector Inbetweener when removing a breakdown
Error when creating a C++ template project
Flipping images doesn’t catch Cell Marks that are on an exposure
Vector Eraser Tool erases too much or at weird places
Dragging unselected items from the Vector Tree View does not work
Using the freehand selection in object mode on a vector layer selects the wrong objects
Ghost cell appearing when dragging the second cell of a layer
Make the deselection of Inbetweener tags easier in the timeline
Scrubbing over a BoardSequence doesn’t work correctly when in camera pilot mode
Double undo recorded when changing the palette entry
Crash when deleting the last single shot in a board track
Artifacts appear when drawing on a layer when a vector layer isn’t properly loaded
Opening old animation projects can lead to white animation planes in the 3D environment
Hello there, Odyssey v4.2.57 is now out !
We have two important hotfixes for you ! Here is the changelog :
Odyssey v4.2.57 Changelog
Hotfix: Freeze and crash when scrubbing in the Storyboard Sequencer
Hotfix: When moving a tool collection from one version of Odyssey to another, their icons are lost
Hey Team!
Every time I try to launch a project, I get the following error: Plugin ‘Odyssey’ failed to load because module ‘EposSequence’ could not be loaded. There may be an operating system error or the module may not be properly set up.
I’m running the following Setup:
Unreal Engine 5.7.3
Windows 11
NVIDIA GeForce RTX 5070 Ti
Hey! Sorry for the late answer, we don’t often connect to the forum (and it’s not sending us any email notifications). Do you have an anti virus or firewall installed?
If you have a Discord account, can you join our Discord Server ( Praxinos-Public ) then d look at the different solutions listed here (you must join our server first !): Discord
Hello there, Odyssey v4.3.57 is now out !
Odyssey v4.3.57 Changelog
New Features :
Add Scan Cleaner option when importing images / Textures to remove the white pixels from paper :
Better UI view when importing an image bigger than the current texture.
Better UI for curves in the ScanCleaner
Save Odyssey Viewport Settings between each session
Rename all Project Settings and Editor Preferences categories to start with the same prefix
Sanitize tools textfield behaviours
Reorganize Texture Editor > File Menu > Import/Export Section to fit to the Animation Editor menu
Rename “Raster Image Layer” to “Raster Layer” and “Vector Image Layer” to “Vector Layer”
Remove the “Overlay Toolbar” option in the Odyssey Viewport
Raster Selection : Display Black and White segments instead of Black and Transparent segments
Make the “Clear Canvas” button use the Raster Selection.
Raster Paint Bucket Tool : Set Source to “Current Layer” by default
New way to create Stagger Cells
Make layers header options take layers selection into account
Add Odyssey Animation Player OnFrameChanged and OnStatusChanged Blueprint Events
Make Plane Distance Widget grow exponentially
Make Plane Distance Widget display fewer digits
Lock Background Layer by default
Change default shortcut for “Clear Current Layer” to Backspace
Add positioning options when importing Texture and Image Sequence
Add number icons (from 0 to 9) to the tool collection icons.
Add indication of piloting camera in viewport
Add import image from disk as layer in a Texture2D
Add checkerboard as background in Flipbook Timeline Thumbnails
Add checkboard colors options in viewport 2D
Add an AutoScale feature to the Animation Component
Add a shortcut to define the radius/size of a tool
Add a reset button in all tools
Add a panel to select file format and layers to export when exporting as image or as texture in the Texture Editor
Add a “Transparent” option to the Vector Paint Buckets
Add a “Replace with current tool” option in the ToolCollection
Add Special Thanks for “Inria Bordeaux - Manoa Team” in Odyssey About Window
Add Odyssey Viewport Rotate secondary shortcut (SHIFT+M)
Bugfix :
Animation is blurred when dropped in the 3D
Crash when using Import Texture or Import Image node without a Parent Layer
Crash when loading layout while having a animation editor window docked in the main window
Crash when adding an entry in an OdysseyPalette asset
Crash when importing some specific png files
Crash and weird behaviours when adding an Animation Component to an actor or duplicating it
flipping tools allows to draw while it shouldn’t be allowed
Zoom selector in flipbook timeline can’t go over 100% even though the drop down menu goes to 400%
Odyssey Editor Mode appears as second editor mode, pushing all other editor modes and messing with shortcuts :
Wrong position of the imported layer when using the ScanCleaner
When selecting several cells and using the clear button, it only erase the current cell.
When importing several textures as layers of an other texture they all have the same name
When importing an image it can be wrongly considered as a normalmap
Edited Animation/Texture is not refreshed in realtime when moving sliders (ex Layer Opacity Sliders)
Timeline move tool does not react properly when scaling OS interface
Sometimes a palette indicates “Indexed” colors when used in a “Raw” color context
Playing a Media Track containing an animation does not play correctly the second time
Opening an animation/texture in the Odyssey Editor Mode displays an empty “Tool Collection” Panel
On every image import, the previous folder is not remembered
Darker resulting colors with ScanCleaner tool
Creating a Texture with a background color and a raster default layer fills the raster layer instead of the background alone with the color
Hello there, Odyssey v4.4.57 is now out !
We have 3 hotfixes for you :
Vector Layer redrawing itself only partially when saving
Saving a Texture with 2 Vector layers hides one of them
Crash when exiting OdysseyMode (mostly occuring with NSEvent on Mac and less with Ink on Windows)
