for a few users there are permanently messages like these in the POA's log:

Error [C01B], updating index: userp48.db, 59107
I wonder if I can ignore them, or if there is a problem to be addressed?

I tried to rebuild the index (7012997), but while the index is rebuild the message appears again. The numbers at the end of the error message are always the same, so I guess they indicate a position within the user database. I found that C01B has to do with invalid characters - so probably there is a character in the user database, that quickfinder does not like? Then this does not mean that the user database itself has a problem? There is just one item missing in the index?

Is this reasoning correct or just wishful thinking?