Hallo 
Habe seit gestern ein ähnliches Problem (via WEB-Interface -> Pakete)
Update package list
Ign 
http://www.minidvblinux.de testing InRelease
Ign 
http://www.minidvblinux.de testing Release.gpg
Ign 
http://www.minidvblinux.de testing Release
Get:1 
http://www.minidvblinux.de testing/main armhf Packages/DiffIndex
Get:2 
http://www.minidvblinux.de testing/main armhf-rpi2 Packages/DiffIndex
Get:3 
http://www.minidvblinux.de testing/main armhf Packages
Get:4 
http://www.minidvblinux.de testing/main armhf-rpi2 Packages
Ign 
http://www.minidvblinux.de testing/main Translation-de_DE
Ign 
http://www.minidvblinux.de testing/main Translation-de
Ign 
http://www.minidvblinux.de testing/main Translation-en
Fetched 613 kB in 2s (214 kB/s)
Reading package lists...
E: Problem parsing dependency Depends
E: Error occurred while processing btrfs (NewVersion2)
E: Problem with MergeList /var/lib/apt/lists/www.minidvblinux.de_download_5.1_files_dists_testing_main_binary-armhf-rpi2_Packages
E: The package lists or status file could not be parsed or opened.
failed
und 
E: Problem parsing dependency Depends E: Error occurred while processing btrfs (NewVersion2) E: Problem with MergeList /var/lib/apt/lists/www.minidvblinux.de_download_5.1_files_dists_testing_main_binary-armhf-rpi2_Packages E: The package lists or status file could not be parsed or opened. E: No packages found E: Problem parsing dependency Depends E: Error occurred while processing btrfs (NewVersion2) E: Problem with MergeList /var/lib/apt/lists/www.minidvblinux.de_download_5.1_files_dists_testing_main_binary-armhf-rpi2_Packages E: The package lists or status file could not be parsed or opened. E: No packages found 
Platform ist MLD5.1 auf RPI2
Hoffe, das hilft weiter ...