Big string using Zeos from Delphi

Hi!!
I am trying to store a picture into pg database. I am usig delphi and
ZeosDBO. I convert the picture into base64 text to send to database but when
I do this I get this error trying to do insert :

SQL:Error pqreadData()
Read()--failed: errno=0
No error

I test using Pgexplorer, this use libpq too, and everything is fine doing
insert and loading from select.
When I try to do a load with select I get the same error above.
At the first I was thinking , the problem was the escape character / but
when I do it the same for pgadmin this ran fine. I replace the character /
for * too, for testing and nothing happens I got the same error.

Somebody has idea?
I know maybe it doesnt appear here but ....is just help! :(

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