Crystal Reports BLOB Object image error!

Hi,

I am trying to display an image using BLOB in crystal reports. The
Reports BLOLB fields are generated using an XML Schema as follows:

....
<xs:element name="bSignature">
<xs:complexType>
<xs:sequence>
<xs:element name="SignatureImg" type="xs:base64Binary"
minOccurs="0" />
</xs:sequence>
</xs:complexType>
</xs:element>
.....

When I execute the report, the following errors occurs:
Query Engine Error:
'C:\DOCUME~1\BFHCY\ASPNET\LOCALS~1\Temp\temp_2823cbda-8851-
4200-9900-adb9734661eb.rpt'

Description: An unhandled exception occurred during the execution of
the current web request. Please review the stack trace
for more
information about the error and where it originated in
the code.

Exception Details: CrystalDecisions.CrystalReports.Engine.DataSourceException:
Query Engine Error: 'C:\DOCUME~1\BFHCY\ASPNET\LOCALS~1\Temp\temp_2823cbda-8851-4200-9900-adb9734661eb.rpt'

But when I remove the BLOB object the report works.

Anyone can enlighten me?

Thanks!

Winston