I downloaded the 64 bit installer and could not install it due to the following errors:
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Warning: the Zip file is read-only. A file name in the archive is too long and had to be truncated: "medici.win32.win32.x86_64/p2/org.eclipse.equinox.p2.engine/profileRegistry/%47;var%47;lib%47;jenkins%47;jobs%47;Medici Desktop 1.2%47;workspace%47;buckminster.output%47;edu.illinois.ncsa.mmdb.desktop.site_1.2.0-eclipse.feature%47;medici.win32.win32.x86_64.profile/".
Warning: the Zip file is read-only. A file name in the archive is too long and had to be truncated: "medici.win32.win32.x86_64/p2/org.eclipse.equinox.p2.engine/profileRegistry/%47;var%47;lib%47;jenkins%47;jobs%47;Medici Desktop 1.2%47;workspace%47;buckminster.output%47;edu.illinois.ncsa.mmdb.desktop.site_1.2.0-eclipse.feature%47;medici.win32.win32.x86_64.profile/.data/".
Warning: the Zip file is read-only. A file name in the archive is too long and had to be truncated: "medici.win32.win32.x86_64/p2/org.eclipse.equinox.p2.engine/profileRegistry/%47;var%47;lib%47;jenkins%47;jobs%47;Medici Desktop 1.2%47;workspace%47;buckminster.output%47;edu.illinois.ncsa.mmdb.desktop.site_1.2.0-eclipse.feature%47;medici.win32.win32.x86_64.profile/.data/org.eclipse.equinox.internal.p2.touchpoint.eclipse.actions/".
Warning: the Zip file is read-only. A file name in the archive is too long and had to be truncated: "medici.win32.win32.x86_64/p2/org.eclipse.equinox.p2.engine/profileRegistry/%47;var%47;lib%47;jenkins%47;jobs%47;Medici Desktop 1.2%47;workspace%47;buckminster.output%47;edu.illinois.ncsa.mmdb.desktop.site_1.2.0-eclipse.feature%47;medici.win32.win32.x86_64.profile/.data/org.eclipse.equinox.internal.p2.touchpoint.eclipse.actions/jvmargs".
Warning: the Zip file is read-only. A file name in the archive is too long and had to be truncated: "medici.win32.win32.x86_64/p2/org.eclipse.equinox.p2.engine/profileRegistry/%47;var%47;lib%47;jenkins%47;jobs%47;Medici Desktop 1.2%47;workspace%47;buckminster.output%47;edu.illinois.ncsa.mmdb.desktop.site_1.2.0-eclipse.feature%47;medici.win32.win32.x86_64.profile/.lock".
Warning: the Zip file is read-only. A file name in the archive is too long and had to be truncated: "medici.win32.win32.x86_64/p2/org.eclipse.equinox.p2.engine/profileRegistry/%47;var%47;lib%47;jenkins%47;jobs%47;Medici Desktop 1.2%47;workspace%47;buckminster.output%47;edu.illinois.ncsa.mmdb.desktop.site_1.2.0-eclipse.feature%47;medici.win32.win32.x86_64.profile/1328669392601.profile.gz".
Warning: the Zip file is read-only. A file name in the archive is too long and had to be truncated: "medici.win32.win32.x86_64/p2/org.eclipse.equinox.p2.engine/profileRegistry/%47;var%47;lib%47;jenkins%47;jobs%47;Medici Desktop 1.2%47;workspace%47;buckminster.output%47;edu.illinois.ncsa.mmdb.desktop.site_1.2.0-eclipse.feature%47;medici.win32.win32.x86_64.profile/1328669392766.profile.gz".
Warning: the Zip file is read-only. A file name in the archive is too long and had to be truncated: "medici.win32.win32.x86_64/p2/org.eclipse.equinox.p2.engine/profileRegistry/%47;var%47;lib%47;jenkins%47;jobs%47;Medici Desktop 1.2%47;workspace%47;buckminster.output%47;edu.illinois.ncsa.mmdb.desktop.site_1.2.0-eclipse.feature%47;medici.win32.win32.x86_64.profile/1328669419943.profile.gz".
Warning: the Zip file is read-only. A file name in the archive is too long and had to be truncated: "medici.win32.win32.x86_64/p2/org.eclipse.equinox.p2.engine/profileRegistry/%47;var%47;lib%47;jenkins%47;jobs%47;Medici Desktop 1.2%47;workspace%47;buckminster.output%47;edu.illinois.ncsa.mmdb.desktop.site_1.2.0-eclipse.feature%47;medici.win32.win32.x86_64.profile/1328669421710.profile.gz".