You're now familiar enough with Tagsistant to know that a recursive scan of the store/ directory can't be done. This is not what indexing tools expect. updatedb (the companion of locate) and other tools like Baloo will try to descend the store/ tree, entering an endless loop. You should exclude every Tagsistant mountpoint from the set of scanned directories. For example, to exclude the Tagsistant managed /home/tx0/myfiles directory from updatedb, modify /etc/updatedb.conf and add the mountpoint to the PRUNEPATHSvariable like in:
PRUNEPATHS="/tmp /var/spool /media /home/.ecryptfs /home/tx0/myfiles"
To avoid scanning Tagsistant directories for each user, ask your users to mount Tagsistant filesystems in subdirectories of a directory called myfiles inside their homes and then add:
Change the name of the mountpoint according to your tastes.