(Fiji Is Just) ImageJ 2.0.0-rc-54/1.51g; Java 1.8.0_102 [64-bit]; Mac OS X 10.9.5; 763MB of 5714MB (13%)
java.lang.NullPointerException
at sholl.Sholl_Analysis.removeOverlayShells(Sholl_Analysis.java:2221)
at sholl.Sholl_Analysis.overlayShells(Sholl_Analysis.java:2236)
at sholl.Sholl_Analysis.run(Sholl_Analysis.java:691)
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:745)