diff --git a/src/server/populate/populate.js b/src/server/populate/populate.js
index 9401a6e..b233131 100644
--- a/src/server/populate/populate.js
+++ b/src/server/populate/populate.js
@@ -167,7 +167,7 @@ module.exports = {
 
       // Contribtypes
       const {Contribtype} = require('../models/contribtype');
-      await this.insertIntoDb_NoDuplicate(abilita, 'contribtypes', Contribtype, 'label')
+      await this.insertIntoDb_NoDuplicate(false, 'contribtypes', Contribtype, 'label')
 
       const {AdType} = require('../models/adtype');
       await this.insertIntoDb_NoDuplicate(abilita, 'adtypes', AdType, 'descr')
diff --git a/src/server/router/users_router.js b/src/server/router/users_router.js
index 9e2dda6..5d2da25 100755
--- a/src/server/router/users_router.js
+++ b/src/server/router/users_router.js
@@ -91,9 +91,10 @@ router.post('/', async (req, res) => {
 
   // tools.mylog("LANG PASSATO = " + user.lang, "IDAPP", user.idapp);
 
-  if (!tools.isAlphaNumeric(body.username) || body.email.length < 6 ||
+  if (!tools.isAlphaNumericAndSpecialCharacter(body.username) || body.email.length < 6 ||
       body.username.length < 6 || body.password.length < 6) {
     await tools.snooze(5000);
+    console.log('Username non valido in Registrazione: ' + body.username);
     res.status(400).
         send({code: server_constants.RIS_CODE_USERNAME_NOT_VALID, msg: ''});
     return 1;
@@ -895,7 +896,8 @@ async function eseguiDbOp(idapp, mydata, locale) {
 
       const globalTables = require('../tools/globalTables');
 
-      const mytablesstr = ['settings', 'users', 'templemail', 'contribtypes'];
+      //++ Todo: TO FIXIT !
+      const mytablesstr = ['settings', 'users', 'templemail', 'contribtypes', 'bots', 'cfgservers'];
 
       try {
         let numrectot = 0;
diff --git a/src/server/tools/general.js b/src/server/tools/general.js
index ec304ca..368b449 100755
--- a/src/server/tools/general.js
+++ b/src/server/tools/general.js
@@ -2373,6 +2373,23 @@ module.exports = {
     }
     return true;
   },
+
+  isAlphaNumericAndSpecialCharacter(str) {
+    let code, i, len;
+
+    for (i = 0, len = str.length; i < len; i++) {
+      code = str.charCodeAt(i);
+      if (!(code > 47 && code < 58) && // numeric (0-9)
+          !(code > 63 && code < 91) && // upper alpha (A-Z)  // e @
+          (code !== 95) && // _
+          (code !== 45) && // -
+          !(code > 96 && code < 123)) { // lower alpha (a-z)
+        return false;
+      }
+    }
+    return true;
+  },
+
   categorizeQueryString(queryObj) {
     let query = {};
     let order = {};