Crystal Reports XI: from ADVANTAGE DATABASE=UNKNOWN ERROR OF DATABASE CONNECTOR

Report created withCrystalReportsXISP4RTMversion14.0.4.738, in local mode.

TheReporthas beencreated from scratch, setting the connection through"Advantage ServerDriver" (crd_ads.dll and crdb_p2sads.dll) and it reads thedata from a database table named "T_corpo.dbf"(Advantage Database)  throughpersonal connection"ADS_DEFINITION"

We tested itwith the preview in Crystal Report XI and everything works fine.

We haveput the report in production in the application which use it.

The application use the "ADS ADVANTAGE 32 bit Client Engine for Windows v. 10.0"

The reportstarts butget the followingerror: "UNKNOWN ERROR OF  DATABASE CONNECTOR"

We have also did the test launching the report from the application, after we removed the connection with the database from the report and in this manner the application opens the report.

WHAT WE REALIZED THAT MUST BE SOME PROBLEMS WITH THE DATA ACCESS......BUT WHICH ONE ?

BOTH THE SOFTWARE:

CrystalReportsXISP4RTMversion14.0.4.738 with which we create the reports

and

the Application which runs the reports using "ADS ADVANTAGE 32 bit Client Engine for Windows v. 10.0"

are on the same computer with operating system: WINDOWS 7 PROFESSIONAL 64-bit Service Pack 1

ANY IDEA WHY THE REPORTS DOESN'T WORK IN THE APPLICATION ?

Thanks to everyone.....