diff --git a/neo-cli/CLI/MainService.Contracts.cs b/neo-cli/CLI/MainService.Contracts.cs
index 57454422c..aaa3546b3 100644
--- a/neo-cli/CLI/MainService.Contracts.cs
+++ b/neo-cli/CLI/MainService.Contracts.cs
@@ -30,9 +30,9 @@ private void OnDeployCommand(string filePath, string manifestPath = null)
             {
                 tx = CurrentWallet.MakeTransaction(script);
             }
-            catch (InvalidOperationException)
+            catch (InvalidOperationException e)
             {
-                Console.WriteLine("Engine faulted.");
+                Console.WriteLine("Error: " + GetExceptionMessage(e));
                 return;
             }
             Console.WriteLine($"Script hash: {scriptHash.ToString()}");
@@ -68,9 +68,9 @@ private void OnInvokeCommand(UInt160 scriptHash, string operation, JArray contra
             {
                 tx = CurrentWallet.MakeTransaction(tx.Script, signers.Length > 0 ? signers[0].Account : null, signers);
             }
-            catch (InvalidOperationException)
+            catch (InvalidOperationException e)
             {
-                Console.WriteLine("Error: insufficient balance.");
+                Console.WriteLine("Error: " + GetExceptionMessage(e));
                 return;
             }
             if (!ReadUserInput("Relay tx(no|yes)").IsYes())
diff --git a/neo-cli/CLI/MainService.NEP5.cs b/neo-cli/CLI/MainService.NEP5.cs
index aa788f803..7230cac72 100644
--- a/neo-cli/CLI/MainService.NEP5.cs
+++ b/neo-cli/CLI/MainService.NEP5.cs
@@ -37,9 +37,9 @@ private void OnTransferCommand(UInt160 tokenHash, UInt160 to, decimal amount)
                     }
                 }, from: null);
             }
-            catch (InvalidOperationException)
+            catch (InvalidOperationException e)
             {
-                Console.WriteLine("Error: insufficient balance.");
+                Console.WriteLine("Error: " + GetExceptionMessage(e));
                 return;
             }
             if (!ReadUserInput("Relay tx(no|yes)").IsYes())
diff --git a/neo-cli/CLI/MainService.Network.cs b/neo-cli/CLI/MainService.Network.cs
index a167f1424..4760f290e 100644
--- a/neo-cli/CLI/MainService.Network.cs
+++ b/neo-cli/CLI/MainService.Network.cs
@@ -146,7 +146,7 @@ private void OnRelayCommand(JObject jsonObjectToRelay)
             }
             catch (Exception e)
             {
-                Console.WriteLine($"One or more errors occurred:{Environment.NewLine}{e.Message}");
+                Console.WriteLine("Error: " + GetExceptionMessage(e));
             }
         }
     }
diff --git a/neo-cli/CLI/MainService.Wallet.cs b/neo-cli/CLI/MainService.Wallet.cs
index 5ebc7a728..c524b3338 100644
--- a/neo-cli/CLI/MainService.Wallet.cs
+++ b/neo-cli/CLI/MainService.Wallet.cs
@@ -378,7 +378,7 @@ private void OnSignCommand(JObject jsonObjectToSign)
             }
             catch (Exception e)
             {
-                Console.WriteLine($"One or more errors occurred:{Environment.NewLine}{e.Message}");
+                Console.WriteLine("Error: " + GetExceptionMessage(e));
             }
         }
 
@@ -523,26 +523,20 @@ private void SignAndSendTx(Transaction tx)
             {
                 context = new ContractParametersContext(tx);
             }
-            catch (InvalidOperationException ex)
+            catch (InvalidOperationException e)
             {
-                Console.WriteLine($"Error creating contract params: {ex}");
+                Console.WriteLine($"Error creating contract params: " + GetExceptionMessage(e));
                 throw;
             }
             CurrentWallet.Sign(context);
-            string msg;
             if (context.Completed)
             {
                 tx.Witnesses = context.GetWitnesses();
-
                 NeoSystem.Blockchain.Tell(tx);
-
-                msg = $"Signed and relayed transaction with hash={tx.Hash}";
-                Console.WriteLine(msg);
+                Console.WriteLine($"Signed and relayed transaction with hash={tx.Hash}");
                 return;
             }
-
-            msg = $"Failed sending transaction with hash={tx.Hash}";
-            Console.WriteLine(msg);
+            Console.WriteLine($"Failed sending transaction with hash={tx.Hash}");
         }
     }
 }
diff --git a/neo-cli/CLI/MainService.cs b/neo-cli/CLI/MainService.cs
index d528b4d3d..2dc8de110 100644
--- a/neo-cli/CLI/MainService.cs
+++ b/neo-cli/CLI/MainService.cs
@@ -578,7 +578,7 @@ static string GetExceptionMessage(Exception exception)
 
             if (exception.InnerException != null)
             {
-                return exception.InnerException.Message;
+                return GetExceptionMessage(exception.InnerException);
             }
 
             return exception.Message;