Downloaded and unzipped SQLdeveloper4 on windows 7 64bit sp1.
Worked first time around but now I get these messages intermittently. I saw another post about this but the solution to delete Appdata\roaming\sqldevloper files didnt work for me as I cant find that folder.
I have downloaded again and unzipped again but still the same issues persist.
Warning - could not install some modules:
oracle.external.jdbc - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\external\oracle.external.jdbc.jar: Not found bundle:oracle.external.jdbc
oracle.ide.file - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\ide\extensions\oracle.ide.file.jar: Not found bundle:oracle.ide.file
oracle.ide_osgi - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\ide\lib\oracle.ide.osgi.jar: Not found bundle:oracle.ide_osgi
oracle.ide - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\ide\extensions\oracle.ide.jar: Not found bundle:oracle.ide
oracle.javaxide - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\ide\lib\javax-ide.jar: Not found bundle:oracle.javaxide
oracle.external.miglayout - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\external\oracle.external.miglayout.jar: Not found bundle:oracle.external.miglayout
oracle.external.oracle_jrf_dms - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\external\oracle.external.oracle-jrf-dms.jar: Not found bundle:oracle.external.oracle_jrf_dms
org.eclipse.equinox.common - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\equinox\org.eclipse.equinox.common_3.6.0.v20100503.jar: Not found bundle:org.eclipse.equinox.common
oracle.javamodel_rt - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\external\oracle.javamodel-rt.jar: Not found bundle:oracle.javamodel_rt
oracle.uic - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\ide\lib\uic.jar: Not found bundle:oracle.uic
oracle.external.xdk - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\external\oracle.external.xdk.jar: Not found bundle:oracle.external.xdk
oracle.jgoodies_looks - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\jlib\jgoodies-looks.jar: Not found bundle:oracle.jgoodies_looks
oracle.external.oracle_jrf_adminserver - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\external\oracle.external.oracle-jrf-adminserver.jar: Not found bundle:oracle.external.oracle_jrf_adminserver
oracle.javatools - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\ide\lib\javatools.jar: Not found bundle:oracle.javatools
oracle.external.xdb - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\external\oracle.external.xdb.jar: Not found bundle:oracle.external.xdb
oracle.ide.searchbar - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\ide\extensions\oracle.ide.searchbar.jar: Not found bundle:oracle.ide.searchbar
oracle.external.odl - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\external\oracle.external.odl.jar: Not found bundle:oracle.external.odl
oracle.ide.library - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\jdev\extensions\oracle.ide.library.jar: Not found bundle:oracle.ide.library
oracle.ide.persistence - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\ide\extensions\oracle.ide.persistence.jar: Not found bundle:oracle.ide.persistence
oracle.java_annotations - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\ide\lib\annotations.jar: Not found bundle:oracle.java_annotations
oracle.icons - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\external\oracle.icons.jar: Not found bundle:oracle.icons
oracle.ide.vfs - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\ide\extensions\oracle.ide.vfs.jar: Not found bundle:oracle.ide.vfs
oracle.ide_boot - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\ide\lib\ide-boot.jar: Not found bundle:oracle.ide_boot
oracle.javatools_jndi_local - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\external\oracle.javatools-jndi-local.jar: Not found bundle:oracle.javatools_jndi_local
oracle.external.balishare - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\external\oracle.external.balishare.jar: Not found bundle:oracle.external.balishare
oracle.ide.indexing - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\ide\extensions\oracle.ide.indexing.jar: Not found bundle:oracle.ide.indexing
oracle.jewt_core - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\jlib\jewt4.jar: Not found bundle:oracle.jewt_core
oracle.javatools_jdk - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\jdev\lib\jdkver.jar: Not found bundle:oracle.javatools_jdk
oracle.peek - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\ide\lib\peek.jar: Not found bundle:oracle.peek
oracle.ide.navigator - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\ide\extensions\oracle.ide.navigator.jar: Not found bundle:oracle.ide.navigator
oracle.external.nlsrtl - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\external\oracle.external.nlsrtl.jar: Not found bundle:oracle.external.nlsrtl
oracle.external.berkeleydb - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\external\oracle.external.berkeleydb.jar: Not found bundle:oracle.external.berkeleydb
oracle.external.xmlparser - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\external\oracle.external.xmlparser.jar: Not found bundle:oracle.external.xmlparser
oracle.ideimpl.peek - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\ide\extensions\oracle.ideimpl.peek.jar: Not found bundle:oracle.ideimpl.peek
oracle.external.jxlayer - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\external\oracle.external.jxlayer.jar: Not found bundle:oracle.external.jxlayer
oracle.ide.ceditor - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\ide\extensions\oracle.ide.ceditor.jar: Not found bundle:oracle.ide.ceditor
oracle.external.timing - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\external\oracle.external.timing.jar: Not found bundle:oracle.external.timing
oracle.idert - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\ide\lib\idert.jar: Not found bundle:oracle.idert
oracle.ide.macros - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\jdev\extensions\oracle.ide.macros.jar: Not found bundle:oracle.ide.macros
oracle.javatools_nodeps - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\external\oracle.javatools-nodeps.jar: Not found bundle:oracle.javatools_nodeps
oracle.ide_print_api - org.netbeans.InvalidException: Netigso: C:\sqldev\sqldeveloper-4.0.1.14.48-x64\sqldeveloper\ide\lib\ide-print-api.jar: Not found bundle:oracle.ide_print_api