When using a saved preset I got the following error

/html/mod/data/preset/A database of web links is not a preset.

More information about this error

Stack trace:
line 379 of /lib/setuplib.php: moodle_exception thrown
line 2068 of /mod/data/lib.php: call to print_error()
line 16 of /mod/data/renderer.php: call to data_preset_importer->get_preset_settings()
line 107 of /mod/data/preset.php: call to mod_data_renderer->import_setting_mappings()

The pre existing image gallery preset did work. So only those I created myself didn't work.

From QA bug http://tracker.moodle.org/browse/MDLQA-356