Resaving specific ViewSetups to HDF5 fails

[PetrBainar]

Resaving specific ViewSetups to a new XML project fails if the first ViewSetup of the current dataset is not selected to be included in the new dataset.

Consider the following scenario - the user has got a dataset consisting of 3 timepoints, 2 channels and 2 illuminations and would like to split the ViewSetups into two smaller datasets according to the channel information.

Resaving ViewSetups which belong to the Channel with ID=0 works fine (see below).

However resaving the "even" ViewSetups" (see below) to a new project fails with the following exception (see further below):

Exception in thread "Thread-83" java.lang.NullPointerException
	at net.preibisch.mvrecon.fiji.spimdata.explorer.popup.ResavePopup$MyActionListener$1.run(ResavePopup.java:227)`
	at java.lang.Thread.run(Thread.java:745)

Lines 215 and 216 in ResavePopup are as follows:

final int firstviewSetupId = data.getSequenceDescription().getViewSetupsOrdered().get( 0 ).getId();
final ExportMipmapInfo autoMipmapSettings = perSetupExportMipmapInfo.get( firstviewSetupId );

When resaving the even ViewSetups, autoMipmapSettings is null, perhaps because data.getSequenceDescription().getViewSetupsOrdered().get( 0 ).getId(); inquires the first ViewSetup ID from the entire dataset, no matter whether it has been selected to be included in the new dataset or not.