IGB 4.56 release notes.

• Cytobands are now shown in the axis tier, for genomes where the data is available on the QuickLoad server.
  
  Users who have implemented their own QuickLoad server can include cytoband data by creating a file named cytoBand.cyt and including it in the directory for the corresponding genome. The format is the same as the files named cytoBands.txt on the UCSC genome browser file download pages, except that we re-name the file to avoid confusion with other ".txt" files.
  
  
• You can now move the entire set of tabbed panels into a new window. This allows you to easily make the main display area a large as possible while still allowing acess to the tabbed panels.
  
  Use View → Open Tabbed Panels in New View.
  
  
• IGB no longer installs a file called igb_prefs.xml during installation. The file will continue to be read and used if it exists on the user's machine. Users who already have such a file may delete it, unless they have made customizations in it.
  
  
• Data tiers from DAS/2 servers will now default to display a short tier name rather than the long URI that is used internally for type identification.
  
  
• Bug Fix: Parsing of certain files in ".chp" format caused the program to freeze.
  
  
• Bug Fix: In rare cases, parsing of a badly-formatted synonyms.txt file could cause excessive use of RAM memory.
  
  
• Bug Fix: The two panels in the DAS/2 data-loading tab can now be re-sized.
  
  
• Bug Fix: For DAS/2 servers where some of the data types in a genome are listed using invalid URI's, IGB will no longer deny access to that genome, but will instead skip those invalid data types.
  
  
• Bug Fix: for files with track lines setting itemRgb="On", version 4.52 would show the item colors in the main view, but the sliced view would throw an exception.
  
  
• Bug Fix: Removed a reference to a class that does not exist in some versions of the java 1.6 runtime environment. This fixes a bug on those 1.6 environments, but should have no effect on most users since java 1.6 is still a beta release.