diff --git a/container/Container.go b/container/Container.go
index af0e0d5..3dfbd1c 100644
--- a/container/Container.go
+++ b/container/Container.go
@@ -1,8 +1,10 @@
 package container
 
 import (
+	"errors"
+
 	cconfig "github.com/pip-services3-go/pip-services3-commons-go/config"
-	"github.com/pip-services3-go/pip-services3-commons-go/errors"
+	cerr "github.com/pip-services3-go/pip-services3-commons-go/errors"
 	crefer "github.com/pip-services3-go/pip-services3-commons-go/refer"
 	cbuild "github.com/pip-services3-go/pip-services3-components-go/build"
 	"github.com/pip-services3-go/pip-services3-components-go/info"
@@ -208,14 +210,18 @@ func (c *Container) Open(correlationId string) error {
 	var err error
 
 	if c.references != nil {
-		return errors.NewInvalidStateError(
+		return cerr.NewInvalidStateError(
 			correlationId, "ALREADY_OPENED", "Container was already opened",
 		)
 	}
 
 	defer func() {
 		if r := recover(); r != nil {
-			err, _ = r.(error)
+			err, ok := r.(error)
+			if !ok {
+				msg, _ := r.(string)
+				err = errors.New(msg)
+			}
 			c.logger.Error(correlationId, err, "Failed to start container")
 			c.Close(correlationId)
 		}
@@ -272,7 +278,11 @@ func (c *Container) Close(correlationId string) error {
 
 	defer func() {
 		if r := recover(); r != nil {
-			err, _ = r.(error)
+			err, ok := r.(error)
+			if !ok {
+				msg, _ := r.(string)
+				err = errors.New(msg)
+			}
 			c.logger.Error(correlationId, err, "Failed to stop container")
 		}
 	}()
diff --git a/container/ProcessContainer.go b/container/ProcessContainer.go
index df4ec76..c9b39f6 100644
--- a/container/ProcessContainer.go
+++ b/container/ProcessContainer.go
@@ -1,6 +1,7 @@
 package container
 
 import (
+	"errors"
 	"fmt"
 	"os"
 	"os/signal"
@@ -25,7 +26,7 @@ Container
 Example
   container = NewEmptyProcessContainer();
   container.Container.AddFactory(NewMyComponentFactory());
-  
+
   container.Run(process.args);
 */
 type ProcessContainer struct {
@@ -152,7 +153,11 @@ func (c *ProcessContainer) printHelp() {
 
 func (c *ProcessContainer) captureErrors(correlationId string) {
 	if r := recover(); r != nil {
-		err, _ := r.(error)
+		err, ok := r.(error)
+		if !ok {
+			msg, _ := r.(string)
+			err = errors.New(msg)
+		}
 		c.Logger().Fatal(correlationId, err, "Process is terminated")
 		os.Exit(1)
 	}
diff --git a/examples/DummyController.go b/examples/DummyController.go
index 7804fd9..2d40cee 100644
--- a/examples/DummyController.go
+++ b/examples/DummyController.go
@@ -8,15 +8,15 @@ import (
 )
 
 type DummyController struct {
-	timer *run.FixedRateTimer
-	logger *log.CompositeLogger
+	timer   *run.FixedRateTimer
+	logger  *log.CompositeLogger
 	message string
 	counter int
 }
 
 func NewDummyController() *DummyController {
-	c := &DummyController {
-		logger: log.NewCompositeLogger(),
+	c := &DummyController{
+		logger:  log.NewCompositeLogger(),
 		message: "Hello World!",
 		counter: 0,
 	}
@@ -69,4 +69,4 @@ func (c *DummyController) Close(correlationId string) error {
 func (c *DummyController) Notify(correlationId string, args *run.Parameters) {
 	c.logger.Info(correlationId, "%d - %s", c.counter, c.message)
 	c.counter++
-}
\ No newline at end of file
+}