Exception when 3D calibration

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What steps will reproduce the problem?

1. Load a tiff sequence.
2. Set camera setup
3. Use default settings do a 3D calibration.

What is the expected output? What do you see instead?
While processing "Fitting polynoms: molecule ... of ...", this exception will happen.

(Fiji Is Just) ImageJ 2.0.0-rc-15/1.49k; Java 1.6.0_24 [64-bit]; Windows NT (unknown) 6.2; 133MB of 98219MB (<1%)
 
java.lang.IllegalArgumentException

	at java.util.PriorityQueue.<init>(PriorityQueue.java:135)

	at cz.cuni.lf1.lge.ThunderSTORM.calibration.IterativeFitting.findIndicesOfSmallestN(IterativeFitting.java:77)

	at cz.cuni.lf1.lge.ThunderSTORM.calibration.IterativeFitting.fit(IterativeFitting.java:35)

	at cz.cuni.lf1.lge.ThunderSTORM.calibration.IterativeFitting.fitParams(IterativeFitting.java:65)

	at cz.cuni.lf1.lge.ThunderSTORM.calibration.CalibrationProcess.fitQuadraticPolynomials(CalibrationProcess.java:163)

	at cz.cuni.lf1.lge.ThunderSTORM.CylindricalLensCalibrationPlugin.run(CylindricalLensCalibrationPlugin.java:110)

	at ij.IJ.runUserPlugIn(IJ.java:202)

	at ij.IJ.runPlugIn(IJ.java:166)

	at ij.Executer.runCommand(Executer.java:131)

	at ij.Executer.run(Executer.java:64)

	at java.lang.Thread.run(Thread.java:662)

What version of the product are you using? On what operating system?
(Fiji Is Just) ImageJ 2.0.0-rc-15/1.49k; Java 1.6.0_24 [64-bit];Windows Server 2012 R2 Datacenter

Please provide any additional information below.
It also happened on Java 1.8. They have amost same exception:

(Fiji Is Just) ImageJ 2.0.0-rc-69/1.52p; Java 1.8.0_172 [64-bit]; Windows Server 2012 R2 6.3; 398MB of 98045MB (<1%)
 
java.lang.IllegalArgumentException

	at java.util.PriorityQueue.<init>(PriorityQueue.java:168)

	at cz.cuni.lf1.lge.ThunderSTORM.calibration.IterativeFitting.findIndicesOfSmallestN(IterativeFitting.java:77)

	at cz.cuni.lf1.lge.ThunderSTORM.calibration.IterativeFitting.fit(IterativeFitting.java:35)

	at cz.cuni.lf1.lge.ThunderSTORM.calibration.IterativeFitting.fitParams(IterativeFitting.java:65)

	at cz.cuni.lf1.lge.ThunderSTORM.calibration.CalibrationProcess.fitQuadraticPolynomials(CalibrationProcess.java:163)

	at cz.cuni.lf1.lge.ThunderSTORM.CylindricalLensCalibrationPlugin.run(CylindricalLensCalibrationPlugin.java:110)

	at ij.IJ.runUserPlugIn(IJ.java:230)

	at ij.IJ.runPlugIn(IJ.java:193)

	at ij.Executer.runCommand(Executer.java:137)

	at ij.Executer.run(Executer.java:66)

	at java.lang.Thread.run(Thread.java:748)