Error message: java.lang.NullPointerException

[NI Based]

Hi,

I could use some help with Maxent. When trying to do run with I get a NullPointerException error message.

This is the log file:

Wed Jul 23 13:57:53 BST 2014
MaxEnt version 3.3.3k
Checking header of C:\Dennis\Programmes_Software\Maxent\lig_30s_Grid_to_ASC_Conv\bio_0.asc
Checking header of C:\Dennis\Programmes_Software\Maxent\lig_30s_Grid_to_ASC_Conv\bio_01.asc
Checking header of C:\Dennis\Programmes_Software\Maxent\lig_30s_Grid_to_ASC_Conv\bio_02.asc
Error reading file C:\Dennis\Programmes_Software\Maxent\lig_30s_Grid_to_ASC_Conv\bio_02.asc: java.lang.NullPointerException
java.lang.NullPointerException
    at java.util.StringTokenizer.<init>(Unknown Source)
    at java.util.StringTokenizer.<init>(Unknown Source)
    at density.GridIO.nextHeaderVal(GridIO.java:391)
    at density.GridIO.getDimension(GridIO.java:285)
    at density.LazyGrid.LazyGridAsc(LazyGrid.java:132)
    at density.LazyGrid.initialize(LazyGrid.java:27)
    at density.LazyGrid.<init>(LazyGrid.java:17)
    at density.Extractor.extractSamples(Extractor.java:118)
    at density.Runner.initializeGrids(Runner.java:193)
    at density.Runner.start(Runner.java:281)
    at density.GUI$7.construct(GUI.java:319)
    at density.SwingWorker$2.run(SwingWorker.java:108)
    at java.lang.Thread.run(Unknown Source)
Time since start: 4.54
Ending


How do I solve this? Any ideas?

Thanks!

NI Based