CrystalReport.Net - Query Engine Error

Hi, I'm creating a windows form using C#.Net and dragged in a crystal report viewer, having done coding for the crystal report. I have also filled the dataset. However, when I compiled successfully and run, there is an error message which reads: Query Engine Error: 'C:\DOCUME~1\MYPC\LOCALS~1\Temp\temp-df63f1f8-8344-4294-b645-2af24146d438.rpt' Then, a blank crytal report was shown. This is not the first time I have done this, but another codes of mine works fine. I am using ODBC data provider and connecting to a MySQL database. Thanks in advance for your advise.