I get a “JavaFX Launcher Error”, “Exception while running Application” when I run a wizard created program. Based on Q&A on the Web, I think my problem may be due to the JAVAFX Path settings. When I go to Tools>>Java Platforms>>"Default JavaFX Platform">>JavaFX Tab, I find only "JavaSE" >> JDK1.7. There's no Path to JavaFX.
In Oracle Java 8, JavaFX is on the default runtime classpath (unlike in previous versions).
In NetBeans 7.4 they completely reworked the JavaFX platform stuff (to remove it as it was unnecessary and confusing).