Error while executing reports in Application server

Hi,
I am trying to upgrade reports developed in Oracle REports 6 version to Oracle Reports 10g.
All these reports are being called from a single form.

3 other reports which do not have a attached library are working fine.
However, 1 report which has an attached library and parameters passed to it when executed is giving the error.

When I see the report server queue, I see the following error
"Terminated with error: <br>REP-300: table or view does not exist ==> account_item aitm1,"

But this table does exist and I have all permissions to access the table too.
These problems are happening with only this report. The rest of the reports ( which have no attached libraries and no parameters passed to them ) are working fine.

I am executing the report.rep file.

Any pointers to how this can be solved will be very useful.
Please help.

Thanks
Aruna