MATLAB: Do I receive errors when using the NetCDF Java package in MATLAB 7.2 (R2006a)

MATLAB

I am attempting to use the NetCDF Java packages from within MATLAB and while doing so I receive the following error:
 Loading units database: com/mathworks/uk/units/Unit.xml
 Fatal error: Could not open null
 java.io.IOException: Could not open null
 at com.mathworks.toolbox.mbc.units.UnitXML.urlToInputSource(UnitXML.java:547)
 at com.mathworks.toolbox.mbc.units.UnitXML.toXdoc(UnitXML.java:151)
 at com.mathworks.toolbox.mbc.units.UnitXML.getFromXML(UnitXML.java:114)
 at ucar.units.StandardUnitDB.addFromXML(StandardUnitDB.java:173)
 at ucar.units.StandardUnitDB.<init>(StandardUnitDB.java:115)
 ...

Best Answer

This issue is caused by and older version of the ucar.units package which is used by the Model-Based Calibration Toolbox.
To work around this issue you can remove mwucarunits.jar from your classpath as long as you do not use the Model-Based Calibration Toolbox which requires mwucarunits.jar. To do this, follow these steps:
1. Execute the following command at the MATLAB command prompt:
edit classpath.txt
2. Find the following line:
 $matlabroot/java/jarext/mwucarunits.jar
and comment it out:
 ##$matlabroot/java/jarext/mwucarunits.jar
3. Save the file and restart MATLAB.
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