diff --git a/clusterless-main/build.gradle.kts b/clusterless-main/build.gradle.kts
index 071a5844..7c061332 100644
--- a/clusterless-main/build.gradle.kts
+++ b/clusterless-main/build.gradle.kts
@@ -351,7 +351,7 @@ tasks.register<JavaExec>("generateCLIDocs") {
     args = listOf(
         "--outdir",
         "build/generated-docs/modules/commands/pages",
-        "clusterless.Main"
+        "clusterless.cls.Main"
     )
 }
 
diff --git a/clusterless-main/src/main/java/clusterless/cls/BaseShowElements.java b/clusterless-main/src/main/java/clusterless/cls/BaseShowElements.java
index 39300ea1..5034b68c 100644
--- a/clusterless-main/src/main/java/clusterless/cls/BaseShowElements.java
+++ b/clusterless-main/src/main/java/clusterless/cls/BaseShowElements.java
@@ -75,7 +75,7 @@ protected static String getModel(Class<? extends Struct> modelClass, boolean req
             return JSONUtil.writeAsPrettyStringSafe(modelClass.getConstructor().newInstance());
         } catch (InstantiationException | IllegalAccessException | InvocationTargetException |
                  NoSuchMethodException e) {
-            throw new RuntimeException(e);
+            throw new RuntimeException("unable to instantiate model: " + modelClass.getCanonicalName(), e);
         }
     }
 
diff --git a/clusterless-model/src/main/java/clusterless/cls/model/deploy/Arc.java b/clusterless-model/src/main/java/clusterless/cls/model/deploy/Arc.java
index afb95e91..0b565009 100644
--- a/clusterless-model/src/main/java/clusterless/cls/model/deploy/Arc.java
+++ b/clusterless-model/src/main/java/clusterless/cls/model/deploy/Arc.java
@@ -37,7 +37,7 @@
                           See the documentation for the arc component for details.
                 """
 )
-public abstract class Arc<W extends Workload<?>> extends Extensible {
+public class Arc<W extends Workload<?>> extends Extensible {
     @JsonRequiredProperty
     String name;
     @JsonRequiredProperty