1- vbadvanced 3.0.1 and it is still free.
2- there is language file for german.
3- PhotoPost PHP Pro = v6.11 PhotoPost vBGallery = v2.43 (for
vb 3.7).
4- i think thr photopost support the german language but the control panel it is always in english.
5- i think it is better to disable the vbadvanced and try to upgrade the vbadvanced.
*note: it is better to have a backup of your database becuase you have a lot of stepes
