Gpt Write NetCDF vs NetCDF4

Hi,
gpt is now producing the following error when asking for any NetCDF* format
(gpt Write -PformatName=NetCDF-CF -Pfile=$ofile -Ssource=$ifile):

org.esa.snap.core.gpf.OperatorException
	at org.esa.snap.core.gpf.internal.OperatorExecutor$GPFImagingListener.errorOccurred(OperatorExecutor.java:376)
	at com.sun.media.jai.util.SunTileScheduler.sendExceptionToListener(SunTileScheduler.java:1646)
	at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:921)
	at javax.media.jai.OpImage.getTile(OpImage.java:1129)
	at com.sun.media.jai.util.RequestJob.compute(SunTileScheduler.java:247)
	at com.sun.media.jai.util.WorkerThread.run(SunTileScheduler.java:468)
Caused by: java.lang.NullPointerException
	at org.esa.snap.dataio.netcdf.metadata.profiles.cf.CfGeocodingPart.encode(CfGeocodingPart.java:188)
	at org.esa.snap.dataio.netcdf.NetCdfWriteProfile.writeProduct(NetCdfWriteProfile.java:52)
	at org.esa.snap.dataio.netcdf.DefaultNetCdfWriter.writeProductNodesImpl(DefaultNetCdfWriter.java:62)
	at org.esa.snap.core.dataio.AbstractProductWriter.writeProductNodes(AbstractProductWriter.java:109)
	at org.esa.snap.core.gpf.common.WriteOp.doExecute(WriteOp.java:304)
	at org.esa.snap.core.gpf.internal.OperatorContext.executeOperator(OperatorContext.java:1243)
	at org.esa.snap.core.gpf.internal.OperatorImage.computeRect(OperatorImage.java:65)
	at javax.media.jai.SourcelessOpImage.computeTile(SourcelessOpImage.java:137)
	at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
	... 3 more

Error: org.esa.snap.core.gpf.OperatorException

On the other hand, it is working perfectly for other formats (HDF5, GeoTIFF…)
Any idea?