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1. Get the new DSpace 1.4.x source code from the DSpace page on SourceForge and unpack it somewhere. Do not unpack it on top of your existing installation!!
2. Copy the PostgreSQL driver JAR to the source tree. For example:

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   Wiki Markup cd \[dspace]/lib cp postgresql.jar \[dspace-1.4.x-source]/lib

3. Wiki Markup

   *Note:* Licensing conditions for the _handle.jar_ file have changed. As a result, the latest version of the _handle.jar_ file is not included in this distribution. It is recommended you read the [new license conditions|http://www.handle.net/upgrade_6-2_DSpace.html|new license conditions] and decide whether you wish to update your installation's _handle.jar_. If you decide to update, you should replace the existing _handle.jar_ in _\[dspace-1.4.x-source\]_/lib with the new version.

4. Take down Tomcat (or whichever servlet container you're using).
5. A new configuration item webui.html.max-depth-guess has been added to avoid infinite URL spaces. Add the following to the dspace.cfg file:

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   #### Multi-file HTML document/site settings ##### # # When serving up composite HTML items, how deep can the request be for us to # serve up a file with the same name? # # e.g. if we receive a request for "foo/bar/index.html" # and we have a bitstream called just "index.html" # we will serve up that bitstream for the request if webui.html.max-depth-guess # is 2 or greater. If webui.html.max-depth-guess is 1 or less, we would not # serve that bitstream, as the depth of the file is greater. # # If webui.html.max-depth-guess is zero, the request filename and path must # always exactly match the bitstream name. Default value is 3. # webui.html.max-depth-guess = 3

   If webui.html.max-depth-guess is not present in dspace.cfg the default value is used. If archiving entire web sites or deeply nested HTML documents it is advisable to change the default to a higher value more suitable for these types of materials.

6. Wiki Markup

   Your 'localized' JSPs (those in jsp/local) now need to be maintained in the _source_ directory. If you have locally modified JSPs in your _\[dspace\]/jsp/local_ directory, you will need to merge the changes in the new 1.4.x versions into your locally modified ones. You can use the _diff_ command to compare your JSPs against the 1.4.x versions to do this. You can also check against the [DSpace CVS|http://dspace.cvs.sourceforge.net/dspace/].

7. Wiki Markup
   In _\[dspace-1.4.x-source\]_ run:

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   Wiki Markup ant -Dconfig= \[dspace]/config/dspace.cfg update

8. Wiki Markup
   Copy the _.war_ Web application files in _\[dspace-1.4.x-source\]/build_ to the _webapps_ sub-directory of your servlet container (e.g. Tomcat). e.g.:

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   Wiki Markup cp \[dspace-1.4.x-source]/build/*.war \[tomcat]/webapps

   Wiki Markup
   If you're using Tomcat, you need to delete the directories corresponding to the old _.war_ files. For example, if _dspace.war_ is installed in _\[tomcat\]/webapps/dspace.war_, you should delete the _\[tomcat\]/webapps/dspace_ directory. Otherwise, Tomcat will continue to use the old code in that directory.

9. Restart Tomcat.