Fixing the meta files

com.unity.ml-agents/Runtime/Communicator/GrpcExtensions.cs

                 var dimensionPropertySensor = sensor as IDimensionPropertiesSensor;
                 if (dimensionPropertySensor != null)
                 {
-                    observationProto.DimensionProperties.AddRange(dimensionPropertySensor.GetDimensionProperties());
+                    var dimensionProperties = dimensionPropertySensor.GetDimensionProperties();
+                    int[] intDimensionProperties = new int[dimensionProperties.Length];
+                    for (int i = 0; i < dimensionProperties.Length; i++)
+                    {
+                        intDimensionProperties[i] = (int)dimensionProperties[i];
+                    }
+                    observationProto.DimensionProperties.AddRange(intDimensionProperties);
                 }
 
             }

com.unity.ml-agents/Runtime/Sensors/BufferSensor.cs

+using System;
+
 namespace Unity.MLAgents.Sensors
 {
     public class BufferSensor : ISensor
         {
             m_MaxNumObs = maxNumberObs;
             m_ObsSize = obsSize;
-            m_ObservationBuffer = new float[m_ObservableSize * m_MaxNumObservables];
+            m_ObservationBuffer = new float[m_ObsSize * m_MaxNumObs];
             m_CurrentNumObservables = 0;
         }
 
         /// <inheritdoc/>
         public int Write(ObservationWriter writer)
         {
-            for (int i = 0; i < m_ObservableSize * m_MaxNumObservables; i++)
+            for (int i = 0; i < m_ObsSize * m_MaxNumObs; i++)
-            return m_ObservableSize * m_MaxNumObservables;
+            return m_ObsSize * m_MaxNumObs;
         }
 
         /// <inheritdoc/>

com.unity.ml-agents/Runtime/Sensors/BufferSensor.cs.meta

+fileFormatVersion: 2
+guid: 034f05c858e684e5498d9a548c9d1fc5
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

com.unity.ml-agents/Runtime/Sensors/BufferSensorComponent.cs.meta

+fileFormatVersion: 2
+guid: dd8012d5925524537b27131fef517017
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

com.unity.ml-agents/Runtime/Sensors/IDimensionPropertiesSensor.cs.meta

+fileFormatVersion: 2
+guid: 297e9ec12d6de45adbcf6dea1a9de019
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: