Comparison of two schemas, error message

Hello.
TOAD for ORACLE 11.6.0.43
Comparison of two schemas, (database-> compare->schemas) of Oracle 11.2.0.2 in different instances.
On the stage of extracting object sizes, I have got message:
‘’ is not a valid floating point value
Can I get some more useful information? For instance: schema, object, row?

Thanks in advance.

Message was edited by: Michael Sh