diff --git a/activitytype-cql/src/main/java/io/nosqlbench/activitytype/cql/statements/core/CQLSessionCache.java b/activitytype-cql/src/main/java/io/nosqlbench/activitytype/cql/statements/core/CQLSessionCache.java
index 024e2250c..776d89a24 100644
--- a/activitytype-cql/src/main/java/io/nosqlbench/activitytype/cql/statements/core/CQLSessionCache.java
+++ b/activitytype-cql/src/main/java/io/nosqlbench/activitytype/cql/statements/core/CQLSessionCache.java
@@ -7,7 +7,6 @@ import io.nosqlbench.activitytype.cql.core.CQLOptions;
 import io.nosqlbench.activitytype.cql.core.ProxyTranslator;
 import io.nosqlbench.engine.api.activityapi.core.Shutdownable;
 import io.nosqlbench.engine.api.activityimpl.ActivityDef;
-import io.nosqlbench.engine.api.exceptions.BasicError;
 import io.nosqlbench.engine.api.metrics.ActivityMetrics;
 import io.nosqlbench.engine.api.scripting.NashornEvaluator;
 import io.nosqlbench.engine.api.util.SSLKsFactory;
diff --git a/engine-cli/src/main/java/io/nosqlbench/engine/cli/NBCLI.java b/engine-cli/src/main/java/io/nosqlbench/engine/cli/NBCLI.java
index 83dab1c3a..fb53a4160 100644
--- a/engine-cli/src/main/java/io/nosqlbench/engine/cli/NBCLI.java
+++ b/engine-cli/src/main/java/io/nosqlbench/engine/cli/NBCLI.java
@@ -5,8 +5,9 @@ import io.nosqlbench.engine.api.activityapi.cyclelog.outputs.cyclelog.CycleLogDu
 import io.nosqlbench.engine.api.activityapi.cyclelog.outputs.cyclelog.CycleLogImporterUtility;
 import io.nosqlbench.engine.api.activityapi.input.InputType;
 import io.nosqlbench.engine.api.activityapi.output.OutputType;
-import io.nosqlbench.engine.api.exceptions.BasicError;
-import io.nosqlbench.nb.api.pathutil.NBPaths;
+import io.nosqlbench.nb.api.content.Content;
+import io.nosqlbench.nb.api.content.NBIO;
+import io.nosqlbench.nb.api.errors.BasicError;
 import io.nosqlbench.engine.core.MarkdownDocInfo;
 import io.nosqlbench.engine.core.ScenarioLogger;
 import io.nosqlbench.engine.core.ScenariosResults;
diff --git a/engine-core/src/main/java/io/nosqlbench/engine/core/ScenarioController.java b/engine-core/src/main/java/io/nosqlbench/engine/core/ScenarioController.java
index e229c00df..f8514a482 100644
--- a/engine-core/src/main/java/io/nosqlbench/engine/core/ScenarioController.java
+++ b/engine-core/src/main/java/io/nosqlbench/engine/core/ScenarioController.java
@@ -19,7 +19,7 @@ import io.nosqlbench.engine.api.activityapi.core.ActivityType;
 import io.nosqlbench.engine.api.activityapi.core.ProgressMeter;
 import io.nosqlbench.engine.api.activityimpl.ActivityDef;
 import io.nosqlbench.engine.api.activityimpl.ParameterMap;
-import io.nosqlbench.engine.api.exceptions.BasicError;
+import io.nosqlbench.nb.api.errors.BasicError;
 import io.nosqlbench.engine.api.metrics.ActivityMetrics;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
diff --git a/engine-core/src/main/java/io/nosqlbench/engine/core/script/Scenario.java b/engine-core/src/main/java/io/nosqlbench/engine/core/script/Scenario.java
index 772ab141e..e09d36210 100644
--- a/engine-core/src/main/java/io/nosqlbench/engine/core/script/Scenario.java
+++ b/engine-core/src/main/java/io/nosqlbench/engine/core/script/Scenario.java
@@ -20,7 +20,7 @@ import io.nosqlbench.engine.core.ProgressIndicator;
 import io.nosqlbench.engine.core.ScenarioController;
 import io.nosqlbench.engine.core.ScenarioLogger;
 import io.nosqlbench.engine.core.ScenarioResult;
-import io.nosqlbench.engine.api.exceptions.BasicError;
+import io.nosqlbench.nb.api.errors.BasicError;
 import io.nosqlbench.engine.api.extensions.ScriptingPluginInfo;
 import io.nosqlbench.engine.api.metrics.ActivityMetrics;
 import io.nosqlbench.engine.core.metrics.MetricRegistryBindings;
diff --git a/engine-core/src/main/java/io/nosqlbench/engine/core/script/ScenariosExecutor.java b/engine-core/src/main/java/io/nosqlbench/engine/core/script/ScenariosExecutor.java
index bcfb7dd41..02595951f 100644
--- a/engine-core/src/main/java/io/nosqlbench/engine/core/script/ScenariosExecutor.java
+++ b/engine-core/src/main/java/io/nosqlbench/engine/core/script/ScenariosExecutor.java
@@ -17,7 +17,7 @@
 
 package io.nosqlbench.engine.core.script;
 
-import io.nosqlbench.engine.api.exceptions.BasicError;
+import io.nosqlbench.nb.api.errors.BasicError;
 import io.nosqlbench.engine.core.*;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
diff --git a/engine-docker/src/main/java/io/nosqlbench/engine/docker/RestHelper.java b/engine-docker/src/main/java/io/nosqlbench/engine/docker/RestHelper.java
index c28013a5a..191e8b35b 100644
--- a/engine-docker/src/main/java/io/nosqlbench/engine/docker/RestHelper.java
+++ b/engine-docker/src/main/java/io/nosqlbench/engine/docker/RestHelper.java
@@ -1,6 +1,6 @@
 package io.nosqlbench.engine.docker;
 
-import io.nosqlbench.engine.api.exceptions.BasicError;
+import io.nosqlbench.nb.api.errors.BasicError;
 import io.nosqlbench.nb.api.pathutil.NBPaths;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
diff --git a/engine-api/src/main/java/io/nosqlbench/engine/api/exceptions/BasicError.java b/nb-api/src/main/java/io/nosqlbench/nb/api/errors/BasicError.java
similarity index 89%
rename from engine-api/src/main/java/io/nosqlbench/engine/api/exceptions/BasicError.java
rename to nb-api/src/main/java/io/nosqlbench/nb/api/errors/BasicError.java
index eb0066e75..a994a2cc7 100644
--- a/engine-api/src/main/java/io/nosqlbench/engine/api/exceptions/BasicError.java
+++ b/nb-api/src/main/java/io/nosqlbench/nb/api/errors/BasicError.java
@@ -1,4 +1,4 @@
-package io.nosqlbench.engine.api.exceptions;
+package io.nosqlbench.nb.api.errors;
 
 /**
  * User exceptions are errors for which we know how to explain the cause to the user.
diff --git a/virtdata-lib-basics/src/main/java/io/nosqlbench/virtdata/library/basics/shared/from_long/to_int/HashedLineToInt.java b/virtdata-lib-basics/src/main/java/io/nosqlbench/virtdata/library/basics/shared/from_long/to_int/HashedLineToInt.java
index 49a87ae9c..89cf27cca 100644
--- a/virtdata-lib-basics/src/main/java/io/nosqlbench/virtdata/library/basics/shared/from_long/to_int/HashedLineToInt.java
+++ b/virtdata-lib-basics/src/main/java/io/nosqlbench/virtdata/library/basics/shared/from_long/to_int/HashedLineToInt.java
@@ -1,7 +1,6 @@
 package io.nosqlbench.virtdata.library.basics.shared.from_long.to_int;
 
 import io.nosqlbench.virtdata.api.annotations.ThreadSafeMapper;
-import io.nosqlbench.nb.api.pathutil.NBPaths;
 import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.LogManager;
 
diff --git a/virtdata-lib-basics/src/main/java/io/nosqlbench/virtdata/library/basics/shared/from_long/to_string/HashedLineToString.java b/virtdata-lib-basics/src/main/java/io/nosqlbench/virtdata/library/basics/shared/from_long/to_string/HashedLineToString.java
index ef97eeea7..91ba7a44c 100644
--- a/virtdata-lib-basics/src/main/java/io/nosqlbench/virtdata/library/basics/shared/from_long/to_string/HashedLineToString.java
+++ b/virtdata-lib-basics/src/main/java/io/nosqlbench/virtdata/library/basics/shared/from_long/to_string/HashedLineToString.java
@@ -20,7 +20,6 @@ package io.nosqlbench.virtdata.library.basics.shared.from_long.to_string;
 
 import io.nosqlbench.virtdata.api.annotations.ThreadSafeMapper;
 import io.nosqlbench.virtdata.library.basics.shared.from_long.to_int.HashRange;
-import io.nosqlbench.nb.api.pathutil.NBPaths;
 import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.LogManager;
 
diff --git a/virtdata-lib-basics/src/main/java/io/nosqlbench/virtdata/library/basics/shared/from_long/to_string/ModuloLineToString.java b/virtdata-lib-basics/src/main/java/io/nosqlbench/virtdata/library/basics/shared/from_long/to_string/ModuloLineToString.java
index 29dedc8a8..f4da61f04 100644
--- a/virtdata-lib-basics/src/main/java/io/nosqlbench/virtdata/library/basics/shared/from_long/to_string/ModuloLineToString.java
+++ b/virtdata-lib-basics/src/main/java/io/nosqlbench/virtdata/library/basics/shared/from_long/to_string/ModuloLineToString.java
@@ -19,7 +19,6 @@
 package io.nosqlbench.virtdata.library.basics.shared.from_long.to_string;
 
 import io.nosqlbench.virtdata.api.annotations.ThreadSafeMapper;
-import io.nosqlbench.nb.api.pathutil.NBPaths;
 import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.LogManager;