I've got several errors like this in my log file:

SEVERE [org.openide.util.Exceptions]
java.net.URISyntaxException: Illegal character in path at index 27: file:/C:/Programme/NetBeans Dev
200903021401/platform10/core/core.jar
        at java.net.URI$Parser.fail(URI.java:2809)
        at java.net.URI$Parser.checkChars(URI.java:2982)
        at java.net.URI$Parser.parseHierarchical(URI.java:3066)
        at java.net.URI$Parser.parse(URI.java:3014)
        at java.net.URI.<init>(URI.java:578)
        at java.net.URL.toURI(URL.java:918)
[catch] at org.netbeans.core.startup.ModuleSystem.loadBootModules(ModuleSystem.java:204)
        at org.netbeans.core.startup.Main.getModuleSystem(Main.java:166)
        at org.netbeans.core.startup.Main.start(Main.java:309)
        at org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:110)
        at java.lang.Thread.run(Thread.java:619)
SEVERE [org.openide.util.Exceptions]
java.net.URISyntaxException: Illegal character in path at index 27: file:/C:/Programme/NetBeans Dev
200903021401/platform10/core/org-openide-filesystems.jar
        at java.net.URI$Parser.fail(URI.java:2809)
        at java.net.URI$Parser.checkChars(URI.java:2982)
        at java.net.URI$Parser.parseHierarchical(URI.java:3066)
        ...

Sth. seems to have been changed in the past days (possibly about two weeks). I'd be glad, if this could be fixed
urgently, as this might cause other problems (as it seems, some core jars are probably not loaded correctly).

The problem with the URI are the space characters, but they worked in the past.