thanks for the reply, Carbonize.
whatever causes this problem - i will use your lazarus version not only because that does not produce the error but also as it seems to protect better against spam (and has some other features i missed like email notification and image verification for comments)
just wanted to say that everything works fine with the lazarus version of the guestbook.
as this seems to be more promising (esp. bec. ofenhanced spam blocking) to me this issue is closed ...
I just installed the current 2.4.1 version of the guestbook in a test environement at my new hoster, but image verification is not properly working (there).
about 75% of the created images have errors, when viewing the (firefox : view image) i get
The image “...” cannot be displayed, because it contains errors.
this does not happen with every image, but most.
any ideas ?
i'm not familiar with what libs are exactly required for the gusetbook, but gd is installed (i can see no gd2 though).
is that a problem of the php installation at the hoster ?