Results found (counted), but not displayed, in PHP-interface with sqlite3

Hi,
I'm trying out the PHP interface for refdb, using sqlite3 as my
database. I am able to add new references to the database by uploading
.ris files. The searching of references, however, is only partially
working. If I do a "simple field-based search" I am greeted with
results of the following kind:

----
Your search for :AX:~Marder% generated 1 result.
----

But no actual result is displayed on the page. (There is nothing in
the HTML code.)

If I search for indices, I am greeted with the following:
----
Your index search for retina in keyword generated 1 entries.

Sorry, there were no results.
----

It seems like the "first part" of the search works -- as something is
found, and counted but that something breaks in section that follows.

Any clues on what's going on?

Regards,
MK

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