Hi,

I'm trying to use the Attract package on MeV and it keeps giving the the following error:

java.lang.NullPointerException
at org.tigr.microarray.mev.cluster.algorithm.impl.ATTRACT.execute(ATTRACT.java:129)
at org.tigr.microarray.mev.cluster.gui.impl.attract.ATTRACTGUI.execute(ATTRACTGUI.java:225)
at org.tigr.microarray.mev.MultipleArrayViewer$7.run(MultipleArrayViewer.java:2625)
at java.lang.Thread.run(Unknown Source)

Can anyone let me know what is going on and how I can address this error?

Thanks