So, I think I found a good way how to solve this problem on the TouchPad.
First of all, my problem was, that I deleted all my pictures but the albums were still in the photos app. The system told me the albums don't exist anymore, but it was still showing them in the cache.
What I did:
With Internalz Pro, naviguate to "/var/db/main".
I just made a backup of the files "indexes.db" and "objects.db", then deleted them and perform a reset (Power+Menu).
I took longer time to load the system, but my photo library was empty! Then I discovered, every "infos" (such as bookmark in Browser, Email account, calendar, etc) related to my account has been deleted.
Looking in the /var/db/main order; both files have been freshly created! I guess the system build a new indexes database. Please note that all my apps are still working.
So, with Internalz Pro, I recovered the previous files from the backup and start the TP again.
All my accounts are back, and the photo apps is now up to date.
I Think removing the .db files forced the system to actualize them.
PS: I have no idea if it works with the music too, because I haven't any mp3 files on my TP.