NullPointerException when attempting to use RootSystemTracker

[txoof]

I am attempting to use the RootSystemTracker with Fiji/ImageJ 2.16.0/1.54p.

I am running on MacOS Tahoe 26.2 with an Apple M2 processor.

I have installed the plugin following the examples in the GitRepo. I have verified the following are installed:

• ImageJ-ITK: https://sites.imagej.net/ImageJ-ITK/
• IJB-plugins: https://sites.imagej.net/IJPB-plugins/
• /plugins/fijiyama: https://sites.imagej.net/Fijiyama/

I have created a directory with the following structure containing time-series data.

── TSD_tiff
    ├── 32_30
    │   ├── 32_20_01.tiff
    │   ├── 32_20_02.tiff
    │   ├── 32_20_03.tiff
    │   ├── 32_20_04.tiff
    │   ├── 32_20_05.tiff
    │   ├── 32_20_06.tiff
    │   ├── 32_20_07.tiff
    │   ├── 32_20_08.tiff
    │   ├── 32_20_09.tiff
    │   ├── 32_20_10.tiff
    │   ├── 32_20_11.tiff
    │   ├── 32_20_12.tiff
    │   ├── 32_20_13.tiff
    │   ├── 32_20_14.tiff
    │   └── 32_20_15.tiff
    ├── Inventory_of_32_30
    └── Processing_of_32_30

EDIT: The inventory_of_32_30 and Processing_of_32_30 are empty and artifacts of failed attempts to run the plugin. They do not contain any content.

Launching FiJi and starting Plugins > Analyze > Root System Tracker, I take the following steps:

1. "Go on a previous experiment ?" No
2. "Start from an existing inventory ?" No
3. When a file system window opens, I navigate to ~/Desktop/TSD_tiff/32_30 and choose Open
4. When prompted: "Select 1 for a data input dir with subdirs containing image seris, 2 for a messy bunch of dirs and subdirs containing images (tif, png, or jpg), each one with a QR code" I choose 1

• We do not have QR Codes in our images

Finally, I get the following output:

(Fiji Is Just) ImageJ 2.16.0/1.54p; Java 21.0.7 [64-bit]; Mac OS X 26.2; 132MB of 12288MB (1%)
 
java.lang.NullPointerException
	at java.base/java.util.Objects.requireNonNull(Objects.java:233)
	at io.github.rocsg.rstplugin.Plugin_RootDatasetMakeInventory.startInventoryOfAlreadyTidyDir(Plugin_RootDatasetMakeInventory.java:612)
	at io.github.rocsg.rstplugin.Plugin_RootDatasetMakeInventory.makeInventory(Plugin_RootDatasetMakeInventory.java:154)
	at io.github.rocsg.rstplugin.Plugin_RootSystemTracker.run(Plugin_RootSystemTracker.java:102)
	at ij.IJ.runUserPlugIn(IJ.java:244)
	at ij.IJ.runPlugIn(IJ.java:210)
	at ij.Executer.runCommand(Executer.java:152)
	at ij.Executer.run(Executer.java:70)
	at java.base/java.lang.Thread.run(Thread.java:1583)

Please let me know if you need additional information. We would very much like to use this!

[txoof]

I have also tried running RSML Expert individually. It generates the following error:

(Fiji Is Just) ImageJ 2.16.0/1.54p; Java 21.0.7 [64-bit]; Mac OS X 26.2; 151MB of 12288MB (1%)
 
java.lang.NullPointerException: Cannot invoke "String.split(String)" because the return value of "io.github.rocsg.fijiyama.common.VitimageUtils.readStringFromFile(String)" is null
	at io.github.rocsg.rsml.RootModel.RootModelWildReadFromRsml(RootModel.java:360)
	at io.github.rocsg.rsml.RsmlExpert_Plugin.setupImageAndRsml(RsmlExpert_Plugin.java:691)
	at io.github.rocsg.rsml.RsmlExpert_Plugin.startPlugin(RsmlExpert_Plugin.java:453)
	at io.github.rocsg.rsml.RsmlExpert_Plugin.run(RsmlExpert_Plugin.java:424)
	at ij.IJ.runUserPlugIn(IJ.java:244)
	at ij.IJ.runPlugIn(IJ.java:210)
	at ij.Executer.runCommand(Executer.java:152)
	at ij.Executer.run(Executer.java:70)
	at java.base/java.lang.Thread.run(Thread.java:1583)