Crystal Report Error Logon failed.Details:crdb_adoplus: Object Reference not set to an instance of an object

Error Description:

Logon failed. Details: crdb_adoplus : Object reference not set to an instance of an object. Error in File C:\DOCUME~1\XXX\LOCALS~1\Temp\XXXX {3309D862-8288-4B18-AEC2-FA3B78AA2BA3}.rpt

Solution:

Check the field explorer. Then select Database Expert. Make sure that the tables selected matches in the xxx.aspx file consists of properties Report datasource in CrystalReportSource control

Crystal Report Viewer Error in ASP.Net 2005

 

Invalid index. (Exception from HRESULT: 0x8002000B (DISP_E_BADINDEX))

System.Runtime.InteropServices.COMException: Invalid index. (Exception from HRESULT: 0x8002000B (DISP_E_BADINDEX))

Solution

1. Go To xxx.rpt and click at the fields eplorer.
2. Select the Database fields.
3. Right Click the table for Set Datasource Location.
4. Match The Tables in Current Data Source and Replace With for Update. Click Close
5. Verify Database.
6. The Database is uptodate message will appear and hopefully no error after this.