Change 'data' column to a 'big' 'text' column

I installed your dev-release of 7-dec-2010 on D7-rc3. The preview of my Data Export-view is OK, but when I show the page as set in the 'Path'-field, I get the following (very long) error:
PDOException: SQLSTATE[HY000]: General error: 1406 Data too long for column 'data' at row 1: INSERT INTO {views_data_export_object_cache} (eid, updated, data) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1,
...
{}s:5:"empty";a:0:{}s:6:"inited";b:1;}}s:8:"executed";b:0;s:5:"built";b:0;s:10:"build_info";a:0:{}s:17:"attachment_before";s:0:"";s:16:"attachment_after";s:0:"";} ) in drupal_write_record() (line 6774 of C:\Damp\Sites\drupal-7.0-rc3\includes\common.inc).

This is for any output type.