No solution? :-(

Hello!
I hope you can help me with these questions:
-First, when I am searching with the default searcher of Joomla, the documents I uploaded with JoomDoc appear, that is good, but, when I try to go their links, I find this error, that you can see in the attachment I uploaded. It says "Details" but there is not more information but the table you can see. If you could tell me how to solve this...


And the second problem is that when I'm looking for a document with the searcher of Joomdoc I cannot find words with accents or with Spanish characters like "ñ" Can this be solved?
Thanks a lot in advance for all the possible helps.