I recently tried to install the NetBeans plugin described in: https://blogs.oracle.com/geertjan/entry/python_in_netbeans_ide_8
However when I now try and start NetBeans I get a horrendous error that starts like this:
Warning - could not install some modules: Java Source Queries - None of the modules providing the capability org.netbeans.modules.java.source.queries.spi.QueriesController could be installed. Debugger Core API - The module named org.openide.filesystems.compat8 was needed and not found. Resource Bundles - The module named org.openide.filesystems.compat8 was needed and not found. Quick Search API - The module named org.openide.filesystems.compat8 was needed and not found. Quick Search API - The module named org.netbeans.api.progress.compat8 was needed and not found. XML Core - The module named org.netbeans.api.xml.ui/1 was needed and not found. XML Core - The module named org.openide.filesystems.compat8 was needed and not found. XML Multiview Editor - The module named org.openide.filesystems.compat8 was needed and not found. Common Palette - The module named org.openide.filesystems.compat8 was needed and not found. Templates - The module named org.openide.filesystems.compat8 was needed and not found. Settings API - The module named org.openide.filesystems.compat8 was needed and not found. Auto Update Services - The module named org.openide.filesystems.compat8 was needed and not found. Auto Update Services - The module named org.netbeans.api.progress.compat8 was needed and not found. REST Application Platform Sample - The module named org.openide.filesystems.compat8 was needed and not found. .manifest file Editor Support - The module named org.openide.filesystems.compat8 was needed and not found. .diff File Editor Support - The module named org.openide.filesystems.compat8 was needed and not found. Java Support APIs - The module named org.openide.filesystems.compat8 was needed and not found. Java Platform - The module named org.openide.filesystems.compat8 was needed and not found. User Utilities - The module named org.openide.filesystems.compat8 was needed and not found. js-test-driver Wrapper - The module named org.openide.filesystems.compat8 was needed and not found. Editor Settings - None of the modules providing the capability org.netbeans.api.editor.settings.implementation could be installed. Editor Library 2 - None of the modules providing the capability org.netbeans.modules.editor.actions could be installed. HTTP Server - The module named org.openide.filesystems.compat8 was needed and not found. HTTP Server-Side Monitor - None of the modules providing the capability org.openide.util.HttpServer$Impl could be installed. HTTP Server-Side Monitor - The module named org.openide.filesystems.compat8 was needed and not found.
And goes on for pages and pages and pages.
I am running this on OS X.
I have deleted the directories /Users/<MyUser>/Library/Application Support/NetBeans and /Users/<MyUser>/Library/Caches/NetBeans, as I have seen mentioned in a few places, but I still receive the same error.
This is completely crippling me and preventing me from doing any work, I have no idea what has happened or how to resolve it.
Any help will be massively appreciated.
Having hit the same impasse, I searched up and down netbeans.org and other sites, provided my logs to bugs https://netbeans.org/bugzilla/show_bug.cgi?id=248986 and https://netbeans.org/bugzilla/show_bug.cgi?id=248291#c5
I exhaustively searched esp. jar and xml files in my %appdata%/Netbeans , sorted by latest modification times, and found files like :
C:\Users\master\AppData\Roaming\NetBeans\8.0\modules org-netbeans-modules-jira-rest.jar org-netbeans-modules-jira-xmlrpc.jar org-netbeans-modules-scanondemand.jar etc.
but removing them, or swapping them out with a prior versions, did not help.
Seeing no real solution to even roll back failed updates, at least to get my Netbeans started at all again, I installed the nightly build http://bits.netbeans.org/download/trunk/nightly/latest/ elsewhere to compare (on a virtual machine, my "spare" PC).
Continued to compare the fresh installation with my broken installation. No changes to my broken %appdata% seemed to allow NB to start.
Finally I compared the system-wide installation folders and found that in my broken copy, not only were many .jar files different in size, but some were missing altogether, including this one implicated widely in the startup errors I was getting:
C:\ProgramFiles\NetBeans\platform\core\org-openide-filesystems-compat8.jar
That was the strongest hint there won't easily be a "fix"....
It's as if some of the sources in https://forums.netbeans.org/posting.php?mode=quote&p=79922 should never have been allowed to make it into the Update Center. ( http://deadlock.netbeans.org/hudson/job/nbms-and-javadoc/lastStableBuild/artifact/nbbuild/nbms/updates.xml.gz in my case....though the chain of dependencies is totally unclear.)
Eventually I overwrote the entire C:\ProgramFiles\NetBeans\ folder from the fresh installation to the broken one, and started successfully.
It needed a few updates, then another restart. Most of my settings were still there, Dark Theme, recent files list, etc. Except the Ruby on Rails plugin, which had remained disabled, and I am still trying to re-add and enable it, since it is blocking even the opening of my ROR projects.
So in summary that awful partial workaround was probably equivalent to a re-installation of Netbeans using the development edition (previously I was on 8.0.2).