Strange Problem with Gallery2-Drupalintegration

Hello,
I'm using Drupal 6.19,
Gallery2 from the SVN from today,
latest gallery2 integration-modul.

I've run all the system-checks from drupal and gallery, and all told me, that everything seems to be fine.

My problem:

if I enter the gallery modul by the main-menu-entry of drupal, everything is fine!...I see the gallery-menu, and also all the other drupal-menu-blocks.
As soon, as I enter an album in this envirement, the gallery-block AND the drupal-main-block disapears. All the other drupal-blocks are displayed.

My blocks are ordered in this way:

1 drupal-main-menu
2 gallery2
3... all the othr stuff

When I enter an album in the embeded gallery, block 1 and 2 disapears

anyone an idea?

Harry

p.s. sorry for my bad english....I'm from germany ;)