Index: install.php
===================================================================
--- install.php	(revision 13571)
+++ install.php	(working copy)
@@ -271,6 +271,8 @@
 						}
 					}
 
+					$this->toolkit->deleteEditTables();
+
 					$this->currentStep = $this->GetNextStep();
 					break;
 
Index: install/install_toolkit.php
===================================================================
--- install/install_toolkit.php	(revision 13571)
+++ install/install_toolkit.php	(working copy)
@@ -819,6 +819,25 @@
 		}
 
 		/**
+		 * Deletes all temp tables (from active sessions too)
+		 *
+		 */
+		function deleteEditTables()
+		{
+			$table_prefix = $this->getSystemConfig('Database', 'TablePrefix');
+
+			$tables = $this->Conn->GetCol('SHOW TABLES');
+			$mask_edit_table = '/' . $table_prefix . 'ses_(.*)_edit_(.*)/';
+			$mask_search_table = '/' . $table_prefix . 'ses_(.*?)_(.*)/';
+
+			foreach ($tables as $table) {
+				if ( preg_match($mask_edit_table, $table, $rets) || preg_match($mask_search_table, $table, $rets) ) {
+					$this->Conn->Query('DROP TABLE IF EXISTS ' . $table);
+				}
+			}
+		}
+
+		/**
 		 * Perform redirect after separate module install
 		 *
 		 * @param string $module_folder