[SOLUTION]
I found a solution for this problem on github:
In the case of using the FX2D renderer, controlP5’s BitFont can’t be rendered and by attempting to do so the above error message is caused. To work around this, set the font to a non-BitFont by calling cp5.setFont(createFont("Arial",10)); right after creating an instance of cp5.
opened 10:32AM - 16 Dec 15 UTC
closed 11:38AM - 14 Feb 16 UTC
Windows 7, Processing 3.0.1
Taking a number of examples (e.g. button / slide / … textfield), adding FX2D to the size() constructor consistently results in the following error which prevents the sketch from running:
```
ControlP5 2.2.5 infos, comments, questions at http://www.sojamo.de/libraries/controlP5
java.lang.NullPointerException
at processing.javafx.PGraphicsFX2D$FontCache$Key.hashCode(PGraphicsFX2D.java:1423)
at java.util.HashMap.hash(HashMap.java:338)
at java.util.LinkedHashMap.get(LinkedHashMap.java:440)
at processing.javafx.PGraphicsFX2D$FontCache.get(PGraphicsFX2D.java:1377)
at processing.javafx.PGraphicsFX2D.handleTextFont(PGraphicsFX2D.java:1470)
at processing.javafx.PGraphicsFX2D.textFontImpl(PGraphicsFX2D.java:1446)
at processing.core.PGraphics.textFont(PGraphics.java:4232)
at controlP5.ControlFont.adjust(Unknown Source)
at controlP5.Label$SinglelineLabel.draw(Unknown Source)
at controlP5.Label$SinglelineLabel.draw(Unknown Source)
at controlP5.Label.draw(Unknown Source)
at controlP5.Textfield.draw(Unknown Source)
at controlP5.ControllerGroup.drawControllers(Unknown Source)
at controlP5.ControllerGroup.draw(Unknown Source)
at controlP5.ControlWindow.draw(Unknown Source)
at controlP5.ControlWindow.draw(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at processing.core.PApplet$RegisteredMethods.handle(PApplet.java:1395)
at processing.core.PApplet$RegisteredMethods.handle(PApplet.java:1388)
at processing.core.PApplet.handleMethods(PApplet.java:1582)
at processing.core.PApplet.handleDraw(PApplet.java:2412)
at processing.javafx.PSurfaceFX$1.handle(PSurfaceFX.java:75)
at processing.javafx.PSurfaceFX$1.handle(PSurfaceFX.java:1)
at com.sun.scenario.animation.shared.TimelineClipCore.visitKeyFrame(TimelineClipCore.java:226)
at com.sun.scenario.animation.shared.TimelineClipCore.playTo(TimelineClipCore.java:184)
at javafx.animation.Timeline.impl_playTo(Timeline.java:176)
at javafx.animation.AnimationAccessorImpl.playTo(AnimationAccessorImpl.java:39)
at com.sun.scenario.animation.shared.InfiniteClipEnvelope.timePulse(InfiniteClipEnvelope.java:110)
at javafx.animation.Animation.impl_timePulse(Animation.java:1102)
at javafx.animation.Animation$1.lambda$timePulse$26(Animation.java:186)
at javafx.animation.Animation$1$$Lambda$102/1585508389.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at javafx.animation.Animation$1.timePulse(Animation.java:185)
at com.sun.scenario.animation.AbstractMasterTimer.timePulseImpl(AbstractMasterTimer.java:344)
at com.sun.scenario.animation.AbstractMasterTimer$MainLoop.run(AbstractMasterTimer.java:267)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:521)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:505)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$400(QuantumToolkit.java:334)
at com.sun.javafx.tk.quantum.QuantumToolkit$$Lambda$56/874026615.run(Unknown Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$145(WinApplication.java:101)
at com.sun.glass.ui.win.WinApplication$$Lambda$52/1125138434.run(Unknown Source)
at java.lang.Thread.run(Thread.java:745)
handleDraw() called before finishing
Could not run the sketch (Target VM failed to initialize).
For more information, read revisions.txt and Help ? Troubleshooting.
```
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