[simba] unable to query default bucket

if I try to run queries like
Select * from default.default
Always get the error.Other buckets can be queried fine.
java.sql.SQLException: [Simba][CouchbaseJDBCDriver](500206) Error query column/table information error, query fail. message SYNTAX_ERROR.
at com.simba.couchbase.utils.CBJDBCQueryUtils.buildRegularErrorMessage(CBJDBCQueryUtils.java:97)
at com.simba.couchbase.dataengine.CBJDBCSQLDataEngine.prepare(CBJDBCSQLDataEngine.java:154)
at com.simba.jdbc.common.SStatement.executeNoParams(Unknown Source)
at com.simba.jdbc.common.SStatement.executeQuery(Unknown Source)
at simba_rqg.JDBCTest.test(JDBCTest.java:79)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
Caused by: com.simba.support.exceptions.GeneralException: [Simba][CouchbaseJDBCDriver](500206) Error query column/table information error, query fail. message SYNTAX_ERROR.
... 27 more