Our javafx application use the javax.imageio.ImageIO class and worked well in applet before last u25 update

Worked well, now we get the efollowing error :

Exception in thread "Thread-125" java.lang.ExceptionInInitializerError

at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at javax.imageio.spi.IIORegistry.getDefaultInstance(Unknown Source)
at javax.imageio.ImageIO.<clinit>(Unknown Source)
... 3 more


Exception in thread "Thread-126" java.lang.NoClassDefFoundError: Could not initialize class javax.imageio.ImageIO