When trying to install the text processing extensions, Installation breaks at approx 60 % with the following error:
An error occurred while collecting items to be installed
session context was:(profile=KNIMEProfile, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
Unable to read repository at http://update.knime.com/analytics-platform/3.5/knid=01-4e8d48a1d9813501/org/3.5/3.5.3/plugins/uk.ac.cam.ch.wwmm.oscar.4-recogniser-core_4.2.2.jar.
Server returned HTTP response code: 500 for URL: http://update.knime.com/analytics-platform/3.5/org/3.5/3.5.3/plugins/uk.ac.cam.ch.wwmm.oscar.4-recogniser-core_4.2.2.jar
After some trials: downloading the zip-archive of the update site locally solved the problem. Maybe the server hosted files need to be checked.