[horde] Ingo Warning

[Hannes Werner]

After upgrading to Horde 5 Final I do get warnings in my Horde-Logs:

2012-10-31T15:31:49+00:00 WARN: HORDE [ingo] PHP ERROR: array_merge():
Argument #1 is not an array [
pid 15133 on line 73 of
"/var/www/horde/ingo/lib/Factory/Transport.php"]
2012-10-31T15:31:49+00:00 WARN: HORDE [ingo] PHP ERROR: array_merge():
Argument #2 is not an array [
pid 15133 on line 41 of "/var/www/horde/ingo/lib/Transport.php"]

What relevance do these entries have, can they be ignored or is there
a fix for it?