Here you can download the latest stable build of the Hugin Graphical User Interface. As bugs are discovered and fixed, new builds will be made available at this place for download.

Note, that if you are looking for updates to the Hugin APIs, please look for our Patches instead.

Installation
The build consists of a single file : "hgui.zip" (or hgui.jar depending on your browser / browser configuration).

For the update to be installed, the file should be copied into the following directory:
<hugin installation directory>\lib
And renamed to hgui.jar. This will replace the existing hgui.jar file.

This is all it takes to install the update.

It is not necessary to install all the updates. The latest update always contains all prior updates as well.

Note, that updates are only available for the latest releases.

Change log for Hugin 6.9
The updates from build 6900 are the following:

• fixed: error related to copying states of numeric nodes in the State Generator.
• fixed: out of memory exceptions in large networks when trying to absorb a node.
  
• fixed: error printing titles in various printingPages. Only the bottom half was printed.
  
• fixed: error in some platforms when printing consecutive networks. The GUI was crashing.
• fixed: error saving cases in DataPreprocessingPanel. Node labels are saved instead of node names if a node exists.
• fixed: error reading a data file in Learning wizard when the names include white spaces.

• beliefbars are marked grey after adaptation until net is propagated
• fixed: AnalysisWizard - Cases/Beliefs tab. Error when trying to save selected cases to a file, after moving the "Case no" column to a possition other than the first(index 0).
• Sensitivity analysis wizard is disabled when network contains CDVT links
• fixed: Analysis wizard were using the total number of cases instead of the actual used number of cases, when calculating error rate, avg. logarithic and quadratic distances.
• fixed: an error in the min-max analysis of the Evidence Sensitivity
  dialog. Some evidence was not correctly retracted.
• fixed: NodeTableFrame bug when selecting View - Bar mode while the table is not generated.
• fixed: error when painting splines(Links). Part of a Link would not get painted
• New message (in DataPreprocessingPanel) to be displayed when the data set is empty and the panel is not used for learning.
• fixed: error when there are instance nodes in the network. The Parameter Sensitivity Analysis menu item is now disabled in that case. Modifications made in Analysis Wizard.
• fixed: value of information analysis should be disabled for chance nodes in influence diagrams.
• fixed: double-occurrence of unbound input nodes in the belief bar

• fixed: when selecting a chance node in an influence diagram in run-mode, an error message appears
• Simulate cases: simulation of intervals including inf/-inf updated
• Simulate cases using MAR should have been disabled when a network contains continous nodes
• fixed: could not save node description in plain text form if the user didn't select first the "html check box" in Network properties panel.
• fixed: an unexpected error appeared in some cases, when tying to do d_seperation on a network in edit mode.

Change log for Hugin 6.8
The updates from build 6800 are the following:

• Fixed error when cancelling "load triangulation"
• The analysis wizard will display state labels or state values depending on the node settings
• Fixed an error that would occur in rare cases in the open file dialog
• Fixed missing clean up in cases where the user tries to load a class with a filename that differ from the class name
• Only findings for labelled discrete chance nodes should be quoted when simulating cases and storing in 'api-compatible new format' (Quotes: yes, EMPTY indicates missing values)

• When saving a new network, the log file directory was suggested as destination. This is now fixed.
• The user now have the option to force belief bars to use scientific notation.
• Network windows will now indicate wheter the network is a class or a flat network file, by with a prefix 'Class' or 'Net' in the project frame title.
• Save ClassCollection will trigger a confirmation dialog that display destination file and the classes that will be stored in it.

• fixed erroneous help file link for the XOI Loss Model
• fixed bug report error when removing parents of a node with an expression
• fixed bug report error when removing parents of a copied node with an invalid expression
• introduced error message when adding states and node table becomes too large instead of bug report window
• introduced error message in EM Learning Wizard creating domain from class and memory requirements become too high instead of bug report window
• bug report when deleting nodes where children had an expression removed
• removed error message when selecting node in run-mode where equilibrium is max
• included link to help files on Analysis Wizard

Change log for Hugin 6.7
The updates from build 6700 are the following:

• Adjusted "add state" functionality
• Fixed printing bug
• Node table divider remember location when switching between run- and edit mode
• Users with scandinavian or german keyboard layout can type ^ in expressions
• "Network->Retract Evidence" was not enabled when selecting decision or continuous chance nodes with evidence
• An error message is now displayed if the Java Virtual Machine runs out of memory when loading a large model from file or opening a table for a node

• Fixed zoom-to-fit bug
• Reversing an arc between two continuous nodes would produce an usage error
• Copy-paste of an instance node with input/output nodes of type decision node would produce an error
• Copy-paste of nodes could produce an error

Change log for Hugin 6.6
The updates from build 6600 are the following:

• "Print probabilities ... " for instance and utility nodes disabled as opposed to reporting a null pointer error.
  
• When a compilation fails (e.g. invalid expression) usage log would still say "Run Mode".
  
• "Get Conflict Resolutions" disabled when the conflict measure is negative.
  
• DEBUG flag erroneously set during compile (this produced stack trace output on some platforms when an error occurred).
  
• Possible to set invalid nodes as input through the "Edit-Input / Output" menu item (i.e. nodes with parents could be set as input).
  
• Revised the value of information dialog slightly to avoid unnecessary scrollbars.
  
• Color coding of nodes lost in the node list.
  
• Some major monitor problems have been solved. This has implied that zooming monitors is no longer supported.
  

Change log for Hugin 6.5
The updates from build 6500 are the following:

• Error in the JNI implementation of expressions caused Hugin to crash

• Error when closing Node Properties window of instance node with no links
• Possible error when copying continuous nodes with no parents or only discrete parents
• Possible error when copying instance nodes with an output node that has been defined as output after the instance node was created
• Possible error when copying continuous nodes with continuous output clones as parents
• Attributes related to node sizes, colors, and so on were not read properly in steps of the Learning Wizard
• Possible NULL pointer error when printing node tables from networks with instance nodes
• The analyse tool of the learning wizard would produce an error if a variable would be completely unobserved in data
• The "discretize variable" window is now hidden if a non-numerical node is selected
• Bug report window presented when Hugin ran out of memory because CPTs become too large.
  
• Possible error when reverting to most recently saved file
• Screen update enforced after checking for a more recent build

• A possible Object Not Alive exception when converting a Domain object to a Class object
• HUGIN Icon missing on drag'N'drop help window
• On Microsoft Windows platforms the drag'n'drop help window appeared behind the main window of the application
  
• A few spelling errors have been corrected

Change Log for Hugin 6.4
The updates from build 100 are the following:

Important
In order to use the auto update feature on windows, you will have to download a new hugin.exe file. This should replace the existing hugin.exe file.

The file can be downloaded at these locations:

• Developer
• Explorer
• Researcher
• Educational
• Classroom

• Updated Bug Report form to new IP address of our Bug Report Server
• Error when using Node Properties with continuous chance nodes with both discrete and continuous parents
  
• Error when adding, renaming, and deleting states of an interval node using the Node Properties window
• A possible Object Not Alive exception in run-mode when attempting to delete nodes or edges by pressing the "delete" key on the keyboard
  
• Possible null pointer when closing frame with tables shown
• The Distribution named Distribution was missing the in Expression Builder for Boolean, Numbered, and Interval
• When reversing an arc, the new parents of the child node were not drawn
• Add and delete state buttons wrongly enabled for some nodes with table pane open under certain circumstances

• Remove state button wrongly disabled

• Hugin hang when clicking the select button
• Delay creation of tables in the learning wizard

• Added "Initialize tables" to learning wizards (for initializing the experience tables to 1)
• Corrected a problem introduced in build 104, concerning the building of expressions

• Fixed error which occured when closing a file and pressing yes to save

• Increased speed of reading data for interval and numbered nodes
• Fixed incorrect enabling of "Get Conflict Resolutions" button and menu item
• Fixed problem with reading some negative values in EM Learning

• Repaint problem fixed

• Fixed problem with autoupdate failing
• Tabbed tables would cause null pointer when the table
  size was just right, thus disabling all repaint operations while the
  table was shown.
• It was possible to select "Set as input" when instance node was selected
• Fixed problem with scrollbars on belief monitors which could not be removed
• Bug when starting Hugin in rare circumstances

Change Log for Hugin 6.3
The updates from build 52 are the following:

• Tables copied wrongly when multiple parents were copied from the same node

• Fixed possible error of duplicate names when saving network.

• Fixed possible null pointer when printing tables
• Fixed various issues with printing probabilities to BMP

• Print of large tables could lead to infinite print of empty pages
• Possible bug when recompiling with open monitors

• Max propagation did not show P(most likely configuration, evidence)
• Size of table pane reset when closed

• Possible error when painting cliques fixed
• Possible error when working with OOBNs fixed

• Error when double clicking parent names in the table

• Close all with tables open caused exception
• Possible exception in EMLearningWizard when moving back and forward a number of times fixed
• Impossible to apply node properties on instance nodes when the original class is instantiated multiple times with similar names
• Exception when closing printing network fixed

• Copying utility nodes with multiple parents occasionally created a wrong parent order in the copy
• Null pointer when selecting node in rare circumstances

• Error when adding more than x model nodes to an expression. Where x depends on the number of states for each added model node, and the width of the table.
• Conflicts in junction trees not always shown correctly when shown for the first time.

• Fixed null pointer error.

• When adding experience/fading tables to all nodes, the tables are updated to show this
• Fixed two possible null pointer errors

• Wrong parsing of Inifinity in the learning wizard
• Bug instead of error message when running out of memory in a node type change operation

• Fixed problem which occured when closing a minimized frame, and all existing frames were minimized as well
• Fixed a bug which occured when printing node tables in certain circumstances
• Fixed a bug which occured when saving a domain, with selected nodes, as a class

• Bug when deleting a link into a node whose table is edited in bar-mode

• Problem when excluding variables from a multi join database setup
• Bug when reopening net with special sized instance nodes

• Fixed nullpointer when copying expression node to a new network
• Questionnaire didnt close on finish, only on cancel
• Monitors made resizable
• Made it possible to use data with no corresponding nodes in EM-learning (normal and wizard)
• Adjusted value replacing and discretizing table to java 1.4
• Saving 5.7 net flipped the net when it was reloaded

Change Log for Hugin 6.2
The changes from build 32 (which is the build which came with the installation of version 6.2) are the following:

• False bug report when exceeding demo limits after adding new node
• Incorrect interpretation of single digit interval values in EM learning

• Error when showing table for decision node

• Adaptation and EM-learning falsely disabled for nets containing CG-nodes

• Nested input nodes with the top level node being unbound caused bug when compiling

• Improved support for printing very large networks to BMP
• Fixed incorrect print to large paper types

• When printing a network from within the learning wizard, a bug occured if no other networks exist.
  

• Fixed error which sometimes occured when changing the type of a node whose table was shown.
  

• Extra paper types added to the print dialog.

• Will now use default browser in windows, if no browser is set in preferences.
• Possible bug after receiving error when switching to run mode.
  

• Max number of separators not set correctly from compilation pane.
  

• Data with intervals containing infinity misinterpreted.
  

• Bug when saving certain OOBNs as 57 nets
  
• Bug report appeared falsely when specifying certain invalid expressions
  
• Incorrect behaviour when changing type of decision node with one or more decision node parents
  
• Incorrect behaviour of the beliefbar for certain OOBNs
  
• Incorrect delta values displayed for states with negative changes
  
• After node properties is shown for a node, the tables of its children are not updated correctly when changing the state labels for the node.
  
• With tables shown, the sequence; create node, select node, delete node, caused a bug.
  

• Unable to complete learning wizard problem fixed
  

• Fixed wrong exceptions in expressions

• It is possible to specify how to show labels / names for nodes