diff --git a/lib/ext/Syncroton/Command/FolderCreate.php b/lib/ext/Syncroton/Command/FolderCreate.php
--- a/lib/ext/Syncroton/Command/FolderCreate.php
+++ b/lib/ext/Syncroton/Command/FolderCreate.php
@@ -98,16 +98,31 @@
                 $this->_folder->deviceId     = $this->_device;
                 $this->_folder->creationTime = $this->_syncTimeStamp;
 
-                $this->_folderBackend->create($this->_folder);
+                // Check if the folder already exists to avoid a duplicate insert attempt in db
+                try {
+                    $this->_folderBackend->getFolder($this->_device, $this->_folder->serverId);
+
+                    if ($this->_logger instanceof Zend_Log)
+                        $this->_logger->info(__METHOD__ . '::' . __LINE__ . " Attempted to create a folder that already exists. parentId: {$folder->parentId} displayName: {$folder->displayName}");
+
+                    // The folder already exists
+                    $this->_status = Syncroton_Command_FolderSync::STATUS_FOLDER_EXISTS;
+                } catch (Syncroton_Exception_NotFound $e) {
+                    // This is the normal case
+                    if ($this->_logger instanceof Zend_Log)
+                        $this->_logger->debug(__METHOD__ . '::' . __LINE__ . " " . $e->getMessage());
+
+                    $this->_folderBackend->create($this->_folder);
+                }
             }
         } catch (Syncroton_Exception_Status $e) {
             if ($this->_logger instanceof Zend_Log)
-                $this->_logger->debug(__METHOD__ . '::' . __LINE__ . " " . $e->getMessage());
+                $this->_logger->warn(__METHOD__ . '::' . __LINE__ . " " . $e->getMessage());
 
             $this->_status = $e->getCode();
         } catch (Exception $e) {
             if ($this->_logger instanceof Zend_Log)
-                $this->_logger->debug(__METHOD__ . '::' . __LINE__ . " " . $e->getMessage());
+                $this->_logger->warn(__METHOD__ . '::' . __LINE__ . " " . $e->getMessage());
 
             $this->_status = Syncroton_Command_FolderSync::STATUS_UNKNOWN_ERROR;
         }