Bug on Saving with VT 6.0.1

[hassoum]

hello, I strated using module desginer on vtiger 6.0.1,and appreciate it. I am not an expert, so apologies for anything badly done. After creating a new Module, I have problems in Saving data after either "Add a record" or "Edit". Data are saved in database tables, but the action bumps me in "URL/index.php" where appears a blank white page and nothing else happens...