2 error of crystal report?

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CrystalReports

2 error in crystal report?
Hi
First question: I have a project in vs2010(c#) which uses of crystal report. It worked properly before, but after some months I opened it but it show below error:

on Following line:
f.reportDocument1.SetDataSource(dtForReport);
Unknown Database Connector Error
Error in File C:\DOCUME~1\user\LOCALS~1\Temp\my_reports {1E7F2B0A-2641-4E1F-85F0-CF39F4167273}.rpt:
Unknown Database Connector Error

After change some settings. Ablve error was resolve but another error was produced.
second error:
Could not load file or assembly 'file:///C:\Program Files\SAP BusinessObjects\Crystal Reports for .NET Framework 4.0\Common\SAP BusinessObjects Enterprise XI 4.0\win32_x86\dotnet1\crdb_adoplus.dll' or one of its dependencies. The system cannot find the file specified.
What is the answer?

Second question :
What is mege madule and how can I install my project on client, so that it work properly without installing crystal report (my project : ns2010 – my crystal : crystal 2008 (ver 12) but I also use of crystal 13 sap)
Thanks very much