Windows 10: cannot reproduce. I do get an exception when trying to preview the cvtColor output, but that's because it's a 4-channel image when only 3-channel images can be previewed. This should probably just be changed to show a warning dialog

Thread[JavaFX Application Thread,5,main] threw an exception

Stack Trace:

java.lang.UnsupportedOperationException: Only 1 or 3 channel images can be shown, tried to show a 4 channel image
	at edu.wpi.grip.ui.util.ImageConverter.convert(ImageConverter.java:118)
	at edu.wpi.grip.ui.preview.ImageSocketPreviewView.lambda$null$0(ImageSocketPreviewView.java:31)
	at edu.wpi.grip.ui.util.GripPlatform.lambda$onJavaFXRunnerEvent$0(GripPlatform.java:74)
	at com.sun.javafx.application.PlatformImpl.lambda$null$173(PlatformImpl.java:295)
	at java.security.AccessController.doPrivileged(Native Method)
	at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(PlatformImpl.java:294)
	at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
	at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
	at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
	at java.lang.Thread.run(Thread.java:745)

System Info:

Property Name	Property
GRIP Version	1.5.1-rc1
java.version	1.8.0_101
javafx.version	8.0.101
os.name	Windows 10
os.version	10.0
os.arch	amd64

Added webcam -> cvResize -> cvtColor(BGR2BGRA) #768

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