remote upload, not working at all

hello, I am really a newbie concerning gallery2, but it should be possible to get the upload applet or remotegallery to upload pictures.

I installed gallery2 on webspace which should provide everything, during installation there were no problems,exept this message during system-check(output_buffering-Parameters activated in php.ini).

uploading via form works fine. but when I try to upload via
the java application, there is always the same error, the upload window appears with
this error: Gallery Remote can find no protocol implementation at the URL http://www.vesterberg-music.com/gallery2/. Check with a web browser that http://www.vesterberg-music.com/gallery2/ is a valid Gallery URL.

And when I try the galleryremoteprogramm......exactly the same.

I thought that it had to do with windows securitysettings, so I tried it on other
computers, where I had to install java first, but the same result.

I tried differend versions of gallery2, 2.1.2 the newest, 2.0.4 and even gallery1 1.5.4
always the same error.

And it also has nothing to do with correct installed modules, or the embeded=false thing
in the config.php

Could somebody help me? the gallery without this feature is useless for me.

thanks in advance!

darth112