Within an application I run an embedded Apache Felix. The application exported javafx packages so that they can be used by plugins (bundles). Within the Plugins I use fxml to create the Views. Everything is going well.

As soon as I import a css(in a fxml) that I have stored in the plugin(bundle), the following exception occurs:

java.io.IOException: Resource does not exist: bundle://6.8:1/view/mystyle.bss
java.io.IOException: Resource does not exist: bundle://6.8:1/view/mystyle.bss
at org.apache.felix.framework.URLHandlersBundleURLConnection.<init>(URLHandlersBundleURLConnection.java:136)
at org.apache.felix.framework.URLHandlersBundleStreamHandler.openConnection(URLHandlersBundleStreamHandler.java:64)
at java.net.URL.openConnection(URL.java:971)
at java.net.URL.openStream(URL.java:1037)
at com.sun.javafx.css.Stylesheet.loadBinary(Stylesheet.java:201)
at com.sun.javafx.css.StyleManager.loadStylesheetUnPrivileged(StyleManager.java:572)
at com.sun.javafx.css.StyleManager.loadStylesheet(StyleManager.java:411)
at com.sun.javafx.css.StyleManager.access$1900(StyleManager.java:72)
at com.sun.javafx.css.StyleManager$StylesheetContainer.gatherParentStylesheets(StyleManager.java:1140)
at com.sun.javafx.css.StyleManager$StylesheetContainer.getStyleHelper(StyleManager.java:1225)
at com.sun.javafx.css.StyleManager$StylesheetContainer.access$1300(StyleManager.java:1031)
at com.sun.javafx.css.StyleManager.getStyleHelper(StyleManager.java:968)
at javafx.scene.Node.impl_createStyleHelper(Node.java:7433)
at javafx.scene.Node.impl_processCSS(Node.java:7403)
at javafx.scene.Parent.impl_processCSS(Parent.java:1146)
at javafx.scene.Node.processCSS(Node.java:7383)
at javafx.scene.Node.processCSS(Node.java:7377)
at javafx.scene.Scene.doCSSPass(Scene.java:443)
at javafx.scene.Scene.access$3800(Scene.java:169)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2198)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:363)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:460)
at com.sun.javafx.tk.quantum.QuantumToolkit$9.run(QuantumToolkit.java:329)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.access$100(WinApplication.java:29)
at com.sun.glass.ui.win.WinApplication$3$1.run(WinApplication.java:73)
at java.lang.Thread.run(Thread.java:722)

The interesting thing is that the CSS is applied anyway.