Null pointer exception in Java TreeView

[rflrob]

Hi all,
I'm trying to K-means cluster some data using Cluster 3.0, then view it using Java TreeView (assorted links to software here http://bonsai.hgc.jp/~mdehoon/softwa...r/software.htm), but when I load the results of the clustering into TreeView, I get the following error:

loading /LabStuff/Data/Spring2013/25um_spacers_K_G20.cdt ... 
Finding Cdt Dimensions
Got null header, setting to empty string
error parsing File: LoadException 1: Error Parsing CDT: java.lang.NullPointerException
parse cannot succeed. please fix.

Any idea how to fix this? The cdt and kgg files are on dropbox at:

https://dl.dropboxusercontent.com/u/3730943/25um_spacers_norm_K_G20.cdt

and

https://dl.dropboxusercontent.com/u/3730943/25um_spacers_norm_K_G20.kgg

Thanks!

EDIT: Alternatively, if anyone has any clustering/heatmapping software that they're happy with for exploring data, I'm certainly open to switching

[greenrussians]

Not sure if this is what happened in your case, but I had this problem today (which is how I found your post) - turns out that some of my arrays had the same id (that is, biological replicates had the same id). I created unique IDs for each array and it worked.