The solution to this problem was found in DefaultMatrix.java.
When the handleBaseCriteriaDeleted() method executed the
sanityCheck() (both methods in IssueMatrix.java), the
sanityCheck() method was returning an error. This was
because a decrement counter for the number of columns was
needed in the removeColumn() method found in
DefaultMatrix.java. Line #206 (columns--) was added to fix
this problem.
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The solution to this problem was found in DefaultMatrix.java.
When the handleBaseCriteriaDeleted() method executed the
sanityCheck() (both methods in IssueMatrix.java), the
sanityCheck() method was returning an error. This was
because a decrement counter for the number of columns was
needed in the removeColumn() method found in
DefaultMatrix.java. Line #206 (columns--) was added to fix
this problem.