Misleading ASP error message.

I am maintaining on a small web application written in classic ASP. It access VFP database via ODBC. I get misleading error while running the program. After debug it for few hours, finally I found the cause and solution.

Error 1	: 'Cannot open file'
Cause	: Database path is incorrect.
Solution	: Correct connection string
Error 2	: Unspecified error on second run the ASP page
Cause	: Wrong version of MDAC driver.
Solution	: Install the latest MDAC driver.