[Koha-devel] Cannot search catalog

Hello, I managed to import some records using bulkmarcimport. But when I try to search the catalog I get the following error (even though I did specify a search criteria).

No results found You did not specify any search criteria.

Error: Can't call method "size" on an undefined value at / Applications/MAMP/htdocs/koha/lib/C4/Search.pm line 405.

Any hint on what may be wrong ? This is on the latest master tree (with Galen's installer changes). Thanks for your answers, Daniel