Release of OMERO 5.4.2

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Release of OMERO 5.4.2

Helen Flynn (Staff)
Dear All,

We are pleased to announce the release of OMERO 5.4.2, a bug-fix release.

Improvements include:

  *   added documentation on a complete workflow for publishing data from OMERO.server (see
  *   added references to the new OMERO pyramid format documentation (within the OME Data Model and File Formats documentation - see
  *   faster loading of thumbnails for large Plates after a recent regression
  *   made projecting images belonging to another user only possible for users with the required permissions to save the new images
  *   improved the public user experience for password-less access
  *   updated SwingX library version used by OMERO.insight to stop insight-ij plugin crashing in Fiji
  *   CLI updates:
     *   ``import --target`` into a container without the necessary permissions now fails before file upload starts and more transparently
     *   ``admin mail`` timeout is now configurable via ``--wait``
     *   added ``admin log`` command for inserting statements to the server log

Sysadmin changes include:

  *   added warning about the need to regenerate your NGINX config for every upgrade
  *   fixed documentation bug affecting OMERO-version-specific guidance
  *   improved OMERO.tables startup stability
  *   server performance improvements and reduction in ERROR logging

Developer updates include:

  *   extended Python and Java examples to include Map Annotations and histograms
  *   added methods for updating OMERO.tables
  *   Java Gateway fixes for sessions and rendering
  *   fixed retrieval of Plate thumbnail URLs
  *   improved Editing OMERO.web documentation
  *   improved Slice documentation for API deprecations
  *   added instructions to documentation for OMERO.cli extensions on how to create CLI plugins that are ``pip`` installable (see
  *   substantial effort to make third-party repositories easily testable; see for more information

This release also upgrades the version of Bio-Formats that OMERO uses to 5.7.3, see

Upgrade information is on the server upgrade page -

The software is available at

Any problems or comments, please use the OME Forums or mailing lists -


The OME Team

Dr Helen Flynn
OME Technical Writer
Centre for Gene Regulation & Expression
Open Microscopy Environment
University of Dundee<>

The University of Dundee is a registered Scottish Charity, No: SC015096

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