While searching for a query like c:c:c:[c,n]:c:c
i got this error.
 
Well uptill now i have not looked into the UIT.
because everything was going find except this.
 
java.lang.NullPointerException
        at org.openscience.cdk.isomorphism.UniversalIsomorphismTester.nodeConstructor(UniversalIsomorphismTester.java:696)
        at org.openscience.cdk.isomorphism.UniversalIsomorphismTester.buildRGraph (UniversalIsomorphismTester.java:384)
        at org.openscience.cdk.isomorphism.UniversalIsomorphismTester.search(UniversalIsomorphismTester.java:413)
        at org.openscience.cdk.isomorphism.UniversalIsomorphismTester.getSubgraphMaps (UniversalIsomorphismTester.java:227)
        at org.openscience.cdk.smiles.smarts.SMARTSQueryTool.matches(SMARTSQueryTool.java:135)
        at org.openscience.cdk.applications.SubstructureFinder.main(SubstructureFinder.java :107)
 
 the query c:c:c:c:c:c or c:c:c:n:c:c is giving very accurate results.
 
 please help me to solve this error.

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sushil ronghe
Center of Pharmacoinformatics
India
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