Java Exception on starting DataProcessor

Posted by mjperson on Jan 10, 2020; 6:50pm
URL: http://astroimagej.170.s1.nabble.com/Java-Exception-on-starting-DataProcessor-tp1271.html

Hi folks,

Anyone have an idea why I always get a Java exception:

java.lang.NullPointerException
        at Data_Processor.countValidFiles(Data_Processor.java:5878)
        at Data_Processor.run(Data_Processor.java:2813)
      etc.

when I launch the DataProcessor?  It pops up the Exception window just on clicking the DP button.  The DP window launches but doesn't work.

I've tried it under several versions of AIJ, (using "Update AIJ" to switch versions) and it is always happening.  It only happens on one of my three machines running AIJ, but always happens on that one rendering the DP unusable on that machine.  (Sadly, it's my best machine.) Other things like multi-ap photometry and plotting work fine on that machine.  

Current is AIJ version 3.3.1, and MacOSX 10.15.2.

Any thoughts would be appreciated.

Mike Person
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