HELP Communication link failure

Hi

I developed a client/server aplication in PB8, and when i open some window,
this problem just happens with this particular window, i receive this
error [ODBC] Communication link failure almost everytime i open this
window, sometimes i don't get the error and it opens fine, i'm using SQL
Anywhere 7 in the server and connecting with a dsn ODBC. Anyone knows
what kind of problem is this or maybe i have some error in my code?

Best Regards and thank you all
Guilherme from Portugal