diff --git a/xvaga/agasys.cpp b/xvaga/agasys.cpp
index ca43668e7..62059171b 100755
--- a/xvaga/agasys.cpp
+++ b/xvaga/agasys.cpp
@@ -26,6 +26,7 @@ static unsigned int aga_getziplist(const char* zipfile, wxArrayString& aFiles)
 	return aFiles.GetCount();
 }
 
+/*
 static int aga_find_slash(const wxString& path, int from)
 {
   for (int i = from; path[i]; i++)
@@ -34,25 +35,18 @@ static int aga_find_slash(const wxString& path, int from)
 
     return -1;
 }
+*/
 
-static void aga_create_dir(wxString strPath)
+static bool aga_create_dir(wxString strPath)
 {
-  if (!wxEndsWithPathSeparator(strPath))
-		strPath += wxFILE_SEP_PATH;
-
-  for (int i = aga_find_slash(strPath, 0); i > 0; i = aga_find_slash(strPath, i+1))
+  bool ok = wxFileName::Mkdir(strPath, 0x777,  wxPATH_MKDIR_FULL);
+  if (!ok)
   {
-    const wxString strDir = strPath.Mid(0,i);
-	  if (!::wxDirExists(strDir))
-    {
-      if (!::wxMkdir(strDir))
-      {
-        wxString strMsg = "Impossibile creare la cartella ";
-        strMsg << strDir << " !!";
-        wxMessageBox(strMsg, "Attenzione!", wxICON_ERROR);
-      }
-    }			
+    wxString strMsg;
+    strMsg << "Impossibile creare la cartella " << strPath;
+    xvt_dm_post_error(strMsg);
   }
+  return ok;
 }
 
 bool aga_unzip(const char* zipfile, const char* destdir)
diff --git a/xvaga/oswin32.cpp b/xvaga/oswin32.cpp
index a458db1d4..686bac847 100755
--- a/xvaga/oswin32.cpp
+++ b/xvaga/oswin32.cpp
@@ -987,8 +987,9 @@ bool OsWin32_GotoUrl(const char* url, const char* action)
   } else
   if (wxStrstr(url, ".jar"))
   {
-    wxString args; args << "-jar " << url;
-    HINSTANCE hinst = ::ShellExecute(NULL, NULL, "java.exe", args, NULL, SW_HIDE); // Hide java console
+    const wxFileName fn = url;
+    wxString args; args << "-jar " << fn.GetFullName();
+    HINSTANCE hinst = ::ShellExecute(NULL, NULL, "java.exe", args, fn.GetPath(), SW_HIDE); // Hide java console
     DWORD winst = DWORD((DWORD*)hinst); // Tutto 'sto giro per evitare un warning
     ok = UINT(winst) > 32; 
   }
diff --git a/xvaga/xvaga.cpp b/xvaga/xvaga.cpp
index 113007390..4f5631ceb 100755
--- a/xvaga/xvaga.cpp
+++ b/xvaga/xvaga.cpp
@@ -1827,7 +1827,7 @@ SLIST xvt_fsys_list_files(const char *type, const char *pat, BOOLEAN dirs)
 {
 	SLIST list = xvt_slist_create();
 
-  int flags = 0;
+  int flags = wxFILE | wxDIR;
 	if (dirs)
 	{
 		if (strcmp(type, DIR_TYPE) == 0)
@@ -1846,7 +1846,6 @@ SLIST xvt_fsys_list_files(const char *type, const char *pat, BOOLEAN dirs)
 		const wxString fnDir = fnPath.GetPath(wxPATH_GET_VOLUME, wxPATH_UNIX);
 		const wxString fnName = fnPath.GetFullName();
 		
-		const int mask = dirs ? (strcmp(type, DIR_TYPE) == 0 ? 2 : 3) : 1;
     wxFTP ftp;
 
     if (!strUser.IsEmpty())
@@ -1867,14 +1866,12 @@ SLIST xvt_fsys_list_files(const char *type, const char *pat, BOOLEAN dirs)
 
 			for (size_t i = 0; i < files.GetCount(); i++)
 			{
-				const int type = files[i][0] == 'd' ? 2 : 1;			
-				if (type & mask)
+				const int type = files[i][0] == 'd' ? wxDIR : wxFILE;
+				if (type & flags) // Entry type matches desired mask?
 				{
-					wxString f(RemotePath);
-						
-					f << '/' << files[i].AfterLast(' ');
+					wxString f = RemotePath; f << '/' << files[i].AfterLast(' ');
 					wxString size = files[i].Mid(30);
-					xvt_slist_add_at_elt(list, NULL, f, type == 2 ? -1 : wxAtol(size));
+					xvt_slist_add_at_elt(list, NULL, f, type == wxFILE ? wxAtol(size) : -1L);
 				}
 			}
 	  }
@@ -3604,8 +3601,8 @@ long xvt_sys_get_profile_int(const char* file, const char* paragraph, const char
   return value;
 }
 
-BOOLEAN xvt_sys_set_profile_string(const char* file, const char* paragraph, const char* name,
-                                   const char* value)
+BOOLEAN xvt_sys_set_profile_string(const char* file, const char* paragraph, 
+                                   const char* name, const char* value)
 {
   if (file == NULL || *file == '\0')
     file = xvt_fsys_get_campo_ini();
@@ -3613,29 +3610,14 @@ BOOLEAN xvt_sys_set_profile_string(const char* file, const char* paragraph, cons
   if (paragraph == NULL || *paragraph == '\0')
     paragraph = "Main";
 
-#ifdef __WXMSW__
-  return ::WritePrivateProfileString(paragraph, name, value, file);
-#else
-	wxFileConfig ini("", "", file, "", wxCONFIG_USE_LOCAL_FILE | wxCONFIG_USE_RELATIVE_PATH);
-	ini.SetUmask(0x0);
-
-  wxString path;
-	path << "/" << paragraph;
-	ini.SetPath(path);
-
-	return ini.Write(name, value);
-#endif
+  return ::WritePrivateProfileString(paragraph, name, value, file) > 0;
 }
 
 BOOLEAN xvt_sys_find_editor(const char* file, char* editor)
 {
   BOOLEAN ok = FALSE;
 
-#ifdef __WXMSW__
   const wxString e = OsWin32_File2App(file);
-#else
-  const wxString e = OsLinux_File2App(file);
-#endif
   ok = !e.IsEmpty();
   if (ok && editor != NULL)
     wxStrncpy(editor, e, _MAX_PATH);
diff --git a/xvaga/xvt.h b/xvaga/xvt.h
index f78e2487e..5792a997f 100755
--- a/xvaga/xvt.h
+++ b/xvaga/xvt.h
@@ -495,12 +495,15 @@ XVTDLL BOOLEAN  xvt_odbc_free_connection(XVT_ODBC handle);
 XVTDLL ULONG    xvt_odbc_execute(XVT_ODBC handle, const char* sql, ODBC_CALLBACK cb, void* jolly);
 XVTDLL BOOLEAN  xvt_odbc_driver(XVT_ODBC handle, char* str, int max_size);
 
+XVTDLL BOOLEAN   xvt_sql_begin(XVT_SQLDB handle);
 XVTDLL BOOLEAN   xvt_sql_close(XVT_SQLDB handle);
+XVTDLL BOOLEAN   xvt_sql_commit(XVT_SQLDB handle);
 XVTDLL BOOLEAN   xvt_sql_driver(XVT_SQLDB handle, char* str, int max_size);
 XVTDLL ULONG     xvt_sql_execute(XVT_SQLDB handle, const char* sql, ODBC_CALLBACK cb, void* jolly);
 XVTDLL SLIST     xvt_sql_list_fields(XVT_SQLDB handle, const char* table);
 XVTDLL SLIST     xvt_sql_list_tables(XVT_SQLDB handle);
 XVTDLL XVT_SQLDB xvt_sql_open(const char* dsn, const char* usr, const char* pwd, const char* dir);
+XVTDLL BOOLEAN   xvt_sql_rollback(XVT_SQLDB handle);
 XVTDLL BOOLEAN   xvt_sql_table_exists(XVT_SQLDB handle, const char* name);
 
 
diff --git a/xvaga/xvt_sql.cpp b/xvaga/xvt_sql.cpp
index 257f6fa9e..1d1abf882 100644
--- a/xvaga/xvt_sql.cpp
+++ b/xvaga/xvt_sql.cpp
@@ -14,6 +14,10 @@ public:
   virtual SLIST ListTables() const = 0;
   virtual bool TableExists(const char* name) const;
 
+  virtual bool Begin() const    { return false; }
+  virtual bool Commit() const   { return false; }
+  virtual bool Rollback() const { return false; }
+  
   virtual ~XVT_SQLDataBase() { Close(); }
 };
 
@@ -45,6 +49,10 @@ protected:
   virtual bool TableExists(const char* name) const;
 
 public:
+  virtual bool Begin() const;
+  virtual bool Commit() const;
+  virtual bool Rollback() const;
+
   XVT_SQLDB_SQLite3() : m_pDB(NULL) {}
 };
 
@@ -77,6 +85,51 @@ bool XVT_SQLDB_SQLite3::Close()
   return true;
 }
 
+bool XVT_SQLDB_SQLite3::Begin() const
+{
+  bool bDone = IsOk();
+  if (bDone)
+  {
+    try { m_pDB->Begin(); }
+    catch(wxSQLite3Exception& e)
+    {
+      xvt_dm_post_error(e.GetMessage());
+      bDone = false;
+    }
+  }
+  return bDone;
+}
+
+bool XVT_SQLDB_SQLite3::Commit() const
+{
+  bool bDone = IsOk();
+  if (bDone)
+  {
+    try { m_pDB->Commit(); }
+    catch(wxSQLite3Exception& e)
+    {
+      xvt_dm_post_error(e.GetMessage());
+      bDone = false;
+    }
+  }
+  return bDone;
+}
+
+bool XVT_SQLDB_SQLite3::Rollback() const
+{
+  bool bDone = IsOk();
+  if (bDone)
+  {
+    try { m_pDB->Rollback(); }
+    catch(wxSQLite3Exception& e)
+    {
+      xvt_dm_post_error(e.GetMessage());
+      bDone = false;
+    }
+  }
+  return bDone;
+}
+
 ULONG XVT_SQLDB_SQLite3::Execute(const char* sql, ODBC_CALLBACK cb, void* jolly)
 {
   ULONG nRows = 0;
@@ -88,20 +141,27 @@ ULONG XVT_SQLDB_SQLite3::Execute(const char* sql, ODBC_CALLBACK cb, void* jolly)
     try
     {
       wxSQLite3ResultSet rs = m_pDB->ExecuteQuery(sql);
-      const short numcols = rs.GetColumnCount();
+      short numcols = rs.GetColumnCount();
 
       if (numcols > 0)
       {
-        char** values = new char*[numcols];  // Lista dei valori del record corrente 
-        memset(values, 0, numcols*sizeof(char*));
+        wxArrayString aNames, aValues;
+
+        const short nMaxCols = 256;
+        char* values[nMaxCols];  // Lista dei valori del record corrente 
+        memset(values, 0, sizeof(values));
     
-        char** names = new char*[numcols*2]; // Lista dei nomi dei campi e dei tipi
-        memset(names, 0, numcols*2*sizeof(char*));
+        char* names[2*nMaxCols]; // Lista dei nomi dei campi e dei tipi
+        memset(names, 0, sizeof(names));
+
+        if (numcols > nMaxCols)
+          numcols = nMaxCols;
 
         short c;
         for (c = 0; c < numcols; c++)
         {
-          names[c] = (char*)(const char*)rs.GetColumnName(c);
+          aNames.Add(rs.GetColumnName(c));
+          names[c] = (char*)(const char*)aNames[c];
           switch (rs.GetColumnType(c))
           {
           case WXSQLITE_INTEGER: 
@@ -114,15 +174,16 @@ ULONG XVT_SQLDB_SQLite3::Execute(const char* sql, ODBC_CALLBACK cb, void* jolly)
 
         while (rs.NextRow())
         {
+          aValues.Empty();
           for (c = 0; c < numcols; c++)
-            values[c] = (char*)(const char*)rs.GetAsString(c);
+          {
+            aValues.Add(rs.GetAsString(c));
+            values[c] = (char*)(const char*)aValues[c];
+          }
           if (cb(jolly, numcols, values, names) != 0)
             break;
           nRows++;
         }
-
-        delete values;   // butta la lista dei valori
-        delete names;    // butta la lista dei nomi
       }
     }
     catch(wxSQLite3Exception& e)
@@ -212,6 +273,42 @@ BOOLEAN xvt_sql_close(XVT_SQLDB handle)
   return ok;
 }
 
+BOOLEAN xvt_sql_begin(XVT_SQLDB handle)
+{
+  BOOLEAN ok = handle != NULL;
+  if (ok)
+  {
+    XVT_SQLDataBase* db = (XVT_SQLDataBase*)handle;
+    if (db != NULL)
+      ok = db->Begin();
+  }
+  return ok;
+}
+
+BOOLEAN xvt_sql_commit(XVT_SQLDB handle)
+{
+  BOOLEAN ok = handle != NULL;
+  if (ok)
+  {
+    XVT_SQLDataBase* db = (XVT_SQLDataBase*)handle;
+    if (db != NULL)
+      ok = db->Commit();
+  }
+  return ok;
+}
+
+BOOLEAN xvt_sql_rollback(XVT_SQLDB handle)
+{
+  BOOLEAN ok = handle != NULL;
+  if (ok)
+  {
+    XVT_SQLDataBase* db = (XVT_SQLDataBase*)handle;
+    if (db != NULL)
+      ok = db->Rollback();
+  }
+  return ok;
+}
+
 ULONG xvt_sql_execute(XVT_SQLDB handle, const char* sql, ODBC_CALLBACK cb, void* jolly)
 {
   ULONG n = 0;
diff --git a/xvaga/xvt_type.h b/xvaga/xvt_type.h
index 0225aa929..341ecf280 100755
--- a/xvaga/xvt_type.h
+++ b/xvaga/xvt_type.h
@@ -111,10 +111,11 @@ XVT_POPUP_OVER_ITEM
 } XVT_POPUP_ALIGNMENT;
 
 #define SZ_FNAME _MAX_FNAME
+#define SZ_EXT   6
 
 typedef struct {	/* file specification */
 DIRECTORY dir;	/* directory */
-char type[6];	/* file type/extension */
+char type[SZ_EXT];	/* file type/extension */
 char name[SZ_FNAME];	/* filename */
 char creator[6];	/* file creator */
 } FILE_SPEC;