Grid stitching throws a NullPointerException

Hi,

I am trying to stitch a series of images to make a single large image. When trying to use the plugin Grid/Collection Stitching or even Pairwise Stitching I get the following NullPointerException.

(Fiji Is Just) ImageJ 2.0.0-rc-43/1.51g; Java 1.6.0_24 [64-bit]; Windows NT (unknown) 6.2; 82MB of 12229MB (<1%)
 
java.lang.NullPointerException
	at mpicbg.imglib.algorithm.fft.PhaseCorrelationPeak.getOriginalInvPCMPosition(PhaseCorrelationPeak.java:74)
	at mpicbg.imglib.algorithm.fft.PhaseCorrelation.verifyWithCrossCorrelation(PhaseCorrelation.java:261)
	at mpicbg.imglib.algorithm.fft.PhaseCorrelation.process(PhaseCorrelation.java:224)
	at mpicbg.stitching.PairWiseStitchingImgLib.computePhaseCorrelation(PairWiseStitchingImgLib.java:210)
	at mpicbg.stitching.PairWiseStitchingImgLib.performStitching(PairWiseStitchingImgLib.java:196)
	at mpicbg.stitching.PairWiseStitchingImgLib.stitchPairwise(PairWiseStitchingImgLib.java:117)
	at mpicbg.stitching.CollectionStitchingImgLib$1.run(CollectionStitchingImgLib.java:69)
	at java.lang.Thread.run(Thread.java:662)
	at mpicbg.imglib.multithreading.SimpleMultiThreading.startAndJoin(SimpleMultiThreading.java:139)
	at mpicbg.stitching.CollectionStitchingImgLib.stitchCollection(CollectionStitchingImgLib.java:91)
	at plugin.Stitching_Grid.run(Stitching_Grid.java:518)
	at ij.IJ.runUserPlugIn(IJ.java:217)
	at ij.IJ.runPlugIn(IJ.java:181)
	at ij.Executer.runCommand(Executer.java:137)
	at ij.Executer.run(Executer.java:66)
	at java.lang.Thread.run(Thread.java:662)

Note. I have ImageJ2 off as this causes an error when reading these particular tiff images.

Adam