update problem? opening manifest.mf

After updating to 2.1.1 I now get the following error when trying to the File META-INF/MANIFEST.MF.
I get the following error message:

An error has occurred. See error log for more details.
org.eclipse.pde.internal.ui.editor.plugin.ManifestEditor cannot be cast to org.eclipse.birt.report.designer.ui.editors.MultiPageReportEditor

Here are my installed plugins:

*** Features:
com.knime.features.reporting.designer (2.1.1.0023926) "KNIME Report Designer"
com.knime.features.reporting.runtime (2.1.1.0023926) "KNIME Reporting Nodes"
com.lowagie.itext (1.5.4.v20080225-1437w31191339) "Lowagie Itext"
com.sun.jna (3.2.3) "JNA Library Plug-in"
org.apache.commons.codec (1.3.0.v20070920-12-7w3119164102711) "Apache Commons Codec Plug-in"
org.apache.derby.core (10.3.1.4) "Apache Derby Core Plug-in for Eclipse"
org.eclipse.birt (2.3.2.r232_v20081010-7N7Y7MAIe2QKQUgWXYGqJMB117Oz) "Business Intelligence and Reporting Tools"
org.eclipse.birt.chart (2.3.2.r232_v20081010-7_7D79_doT2uMPVNwOGrZNKUMDK7) "BIRT Chart Framework"
org.eclipse.birt.chart.cshelp (2.3.2.r232_v20081010-2217s343Aw31192216) "BIRT Chart Context-sensitive Help"
org.eclipse.birt.chart.doc.isv (2.3.2.r232_v20081010-2217s343Aw31192121) "BIRT Chart ISV Documentation"
org.eclipse.birt.chart.integration.wtp (2.3.2.r232_v20081010-2217s343A3119211_) "BIRT Chart WTP Integration Plug-in"
org.eclipse.birt.chart.runtime (2.3.2.r232_v20081010-7X8n7EELtcA6IWMJTLCJ6B) "BIRT Chart Runtime"
org.eclipse.birt.chart.runtime.source (2.3.2.r232_v20081010-7X8n7EELtcA6IWMJTLCJ6B) "BIRT Chart Runtime Source"
org.eclipse.birt.chart.source (2.3.2.r232_v20081010-7_7D79_doT2uMPVNwOGrZNKUMDK7) "BIRT Chart Source Plugin"
org.eclipse.birt.crosstab.source (2.3.2.r232_v20081010-4538k797M733K3737) "BIRT Source"
org.eclipse.birt.cshelp (2.3.2.r232_v20081010-2217s343Aw31192224) "BIRT Context-sensitive Help"
org.eclipse.birt.doc (2.3.2.r232_v20081010-2217s343Aw31192216) "BIRT Documentation"
org.eclipse.birt.doc.isv (2.3.2.r232_v20081010-2217s343Aw31192121) "BIRT ISV Documentation"
org.eclipse.birt.example (2.3.2.r232_v20081010-7D7J7CC7QXRK0ICmcLILD) "BIRT Example"
org.eclipse.birt.integration.wtp (2.3.2.r232_v20081204-2217s343A311_1233) "BIRT WTP Integration Plug-in"
org.eclipse.birt.report.data.oda.jdbc.dbprofile.sqlbuilder.feature.source (2.3.2.r232_v20081010-787A779lxNRkRRSNH-o6hw_VyBvY) "BIRT Source"
org.eclipse.birt.report.designer (2.3.2.r232_v20081010-7X7n7WEBPrSQ8w5dz-T98JHOZpz0) "BIRT Report Designer"
org.eclipse.birt.report.designer.debug.source (2.3.2.r232_v20081010-4538k797M733K3737) "BIRT Report Designer Source"
org.eclipse.birt.report.designer.editor.xml.wtp (2.3.2.r232_v20090212-2217s343A311_1313) "BIRT Advanced XML Editor Plug-in"
org.eclipse.birt.report.designer.editor.xml.wtp.source (2.3.2.r232_v20090212-2217s343A311_1313) "BIRT Report Designer XML Tab Editor source"
org.eclipse.birt.report.designer.source (2.3.2.r232_v20081010-7X7n7WEBPrSQ8w5dz-T98JHOZpz0) "BIRT Report Designer Source"
org.eclipse.birt.report.runtime (2.3.2.r232_v20081010-7k8E7fELFluayXv9UxAuXfW6B9_) "BIRT Report Runtime"
org.eclipse.birt.report.runtime.source (2.3.2.r232_v20081010-7k8E7fELFluayXv9UxAuXfW6B9_) "BIRT Report Runtime Source Plugin"
org.eclipse.birt.sdk (2.3.2.r232_v20081010-7R7e7QE85C3fls5tdR7s2T1pcug5) "BIRT SDK"
org.eclipse.birt.source (2.3.2.r232_v20081010-7N7Y7MAIe2QKQUgWXYGqJMB117Oz) "BIRT Source Plugin"
org.eclipse.cvs (1.1.2.R342_v20090122-7C79E9x9sLM1t6M9YD7_A7) "Eclipse CVS Client"
org.eclipse.datatools.connectivity.feature (1.6.2.v200810071455-7_7K7NDn-QYKjkBKlmD4edYsAX) "Data Tools Platform Connectivity Plug-in"
org.eclipse.datatools.connectivity.oda.designer.feature (1.6.2.v200901211403-7C67XCYQCD7ESIqIQco) "DTP ODA Designer UI Framework Plug-in"
org.eclipse.datatools.connectivity.oda.feature (1.6.2.v200810071455-7F27SBcMAAxCcHmCNWi) "DTP Open Data Access"
org.eclipse.datatools.doc.user (1.6.2.v200810071455-37A09oA55S6H_L8DFG24) "Data Tools Platform User Documentation"
org.eclipse.datatools.enablement.apache.derby.feature (1.6.2.v200810071455-6577AlJCKcLZI2Ljcc8MDD) "High-level Sybase Enablement Plug-in"
org.eclipse.datatools.enablement.feature (1.6.2.v200810071455-7D8H7P9FT9Ofz-RuiDlMiw8OR2pj) "Eclipse Data Tools Platform Enablement"
org.eclipse.datatools.enablement.hsqldb.feature (1.6.2.v200810071455-57_2_pFAIQJZIsLSXb8MDD) "Eclipse Data Tools Platform Enablement"
org.eclipse.datatools.enablement.ibm.feature (1.6.2.v200810071455-7D47FEB7sQSBV7hXWQ6R) "Eclipse Data Tools Platform Enablement"
org.eclipse.datatools.enablement.jdbc.feature (1.6.2.v200810071455-3-29oA55S7__D7LCC) "High-level Sybase Enablement Plug-in"
org.eclipse.datatools.enablement.msft.feature (1.6.2.v200810071455-442_kE77c7VBQDFNW) "Eclipse Data Tools Platform Enablement"
org.eclipse.datatools.enablement.mysql.feature (1.6.2.v200810071455-446_kE77d8H_VALOJ) "Eclipse Data Tools Platform Enablement"
org.eclipse.datatools.enablement.oda.designer.feature (1.6.2.v200810071455-2138s733J465I548A) "Eclipse Data Tools Platform XML ODA Designer"
org.eclipse.datatools.enablement.oda.feature (1.6.2.v200810071455-797P78CYQCD5DjGdEURT) "Eclipse Data Tools Platform XML ODA Runtime Driver"
org.eclipse.datatools.enablement.oracle.feature (1.6.2.v200810071455-443_kE77d7OAPAMJQ) "Eclipse Data Tools Platform Enablement"
org.eclipse.datatools.enablement.postgresql.feature (1.6.2.v200810071455-442_kE77d7N9VANON) "Eclipse Data Tools Platform Enablement"
org.eclipse.datatools.enablement.sap.feature (1.6.2.v200810071455-440_kE77c7QAQEIQQ) "Eclipse Data Tools Platform Enablement"
org.eclipse.datatools.enablement.sybase.feature (1.6.2.v200810071455-7A-5E9IgKLjM1d1Oepu) "High-level Sybase Enablement Plug-in"
org.eclipse.datatools.modelbase.feature (1.6.2.v200810071455-6-2BcMAAyBWDkEVSb) "Eclipse Data Tools Platform SQLModel Plug-in"
org.eclipse.datatools.sqldevtools.feature (1.6.2.v200810071455-7F7d7AE8yz-YIwEvOFuOF3SqVz-z) "Eclipse Data Tools Platform SQL Tools Common UI Plug-in"
org.eclipse.draw2d (3.4.2.v20090218-1145-3317w311_122502441) "Graphical Editing Framework Draw2d"
org.eclipse.emf (2.4.2.v200902171115) "EMF - Eclipse Modeling Framework"
org.eclipse.emf.codegen (2.4.0.v200902171115) "EMF Code Generation"
org.eclipse.emf.codegen.ecore (2.4.2.v200902171115) "EMF Ecore Code Generator"
org.eclipse.emf.codegen.ecore.ui (2.4.1.v200902171115) "EMF Ecore Code Generator UI"
org.eclipse.emf.codegen.ui (2.4.0.v200902171115) "EMF Code Generation UI"
org.eclipse.emf.common (2.4.0.v200902171115) "EMF Common"
org.eclipse.emf.common.ui (2.4.0.v200902171115) "EMF Common UI"
org.eclipse.emf.converter (2.4.1.v200902171115) "EMF Model Converter"
org.eclipse.emf.databinding (1.0.0.v200902171115) "EMF Data Binding"
org.eclipse.emf.databinding.edit (1.0.0.v200902171115) "EMF Edit Data Binding"
org.eclipse.emf.ecore (2.4.2.v200902171115) "EMF Ecore"
org.eclipse.emf.ecore.edit (2.4.1.v200902171115) "EMF Ecore Edit"
org.eclipse.emf.ecore.editor (2.4.0.v200902171115) "EMF Sample Ecore Editor"
org.eclipse.emf.edit (2.4.2.v200902171115) "EMF Edit"
org.eclipse.emf.edit.ui (2.4.2.v200902171115) "EMF Edit UI"
org.eclipse.emf.mapping (2.4.0.v200902171115) "EMF Mapping"
org.eclipse.emf.mapping.ecore (2.4.0.v200902171115) "EMF Ecore Mapping"
org.eclipse.emf.mapping.ecore.editor (2.4.0.v200902171115) "EMF Ecore Mapping Editor"
org.eclipse.emf.mapping.ui (2.4.0.v200902171115) "EMF Mapping UI"
org.eclipse.gef (3.4.2.v20090218-1145-67728084A56B4I233613552) "Graphical Editing Framework GEF"
org.eclipse.help (1.0.2.R342_v20090122-7r7xEKaEJBZu5oGhP3u6nOmbM9VK) "Help System Base"
org.eclipse.jdt (3.4.2.r342_v20081217-7o7tEAoEEDWEm5HTrKn-svO4BbDI) "Eclipse Java Development Tools"
org.eclipse.pde (3.4.2.R342_v20090122-7T7U1E9imVKz-A8Vz-p_jRS) "PDE"
org.eclipse.platform (3.4.2.R342_v20090122-9I96EiWElHi8lheoJKJIvhM3JfVsYbRrgVIWL) "Eclipse Platform"
org.eclipse.rcp (3.4.200.R342_v20090122-989JESTEbig-SVaL8UJHcYBr4A63) "Eclipse RCP"
org.eclipse.sdk (3.4.2.R342_v20090122-7O7S7GApJ3_vCyk7ETmsfcmjhz0eHnqw7MIjk9Vdhe4Ic) "Eclipse Project SDK"
org.eclipse.xsd (2.4.2.v200902171115) "XSD - XML Schema Definition Model"
org.eclipse.xsd.edit (2.4.0.v200902171115) "XSD Edit"
org.knime.features.base (2.1.1.0023926) "KNIME Konstanz Information Miner"
org.knime.features.ext.md (2.1.1.0023926) "RuleViewer-Node extension for KNIME"
org.knime.features.ext.textprocessing (2.1.1.0023926) "KNIME Textprocessing Plug-in"
org.knime.features.ext.webservice.client (2.1.1.0023926) "KNIME WebService Client Node"
org.knime.features.ext.webservice.client.ppilot (2.1.1.0023926) "KNIME Pipeline Pilot WebService Connector"
org.knime.features.wizard (2.1.1.0023926) "KNIME Workbench Extensions"
org.mozilla.rhino (1.6.7.v20071217-1567w31191325) "Mozilla Rhino"
org.tigris.subversion.clientadapter.feature (1.6.4.1) "Subversion Client Adapter"
org.tigris.subversion.clientadapter.javahl.feature (1.6.6) "Subversion JavaHL"
org.tigris.subversion.subclipse (1.6.5) "SVN Team Provider Core"
org.tigris.subversion.subclipse.graph.feature (1.0.7) "Subversion Revision Graph"
org.tmatesoft.svnkit (1.3.2.6267) "SVNKit Library Plug-in"
org.w3c.sac (1.3.0.v20080102-46-_kE77b7U_N56BA) “W3C Sac”

I can reproduce the problem. I’ll open a bug report and make sure that it will be fixed for v2.1.2. For now, I guess, you need to uninstall the reporting extensions in your KNIME SDK.

Thanks for making us aware of it.