When exporting a dataset to Excel (or to a delimited text file with the option checked to include CLOB data) which includes CLOB columns the following error occurs:
"an unhandled win 32 exception occurred..."
and the Excel file is not created.
WORKAROUND:
Install SQL Navigator for Oracle v5.5.4.847 side-by-side with 6.x. The installer can be downloaded from:
http://support.quest.com/support_download/Downloads.asp
STATUS:
Waiting for fix in a future release of SQL Navigator for Oracle