troubles with a JSP

[Carlos de Luna Saenz]

I have a JSP that uses the mailer tag lib... when i use the JSP on the / directory of the webserver... it works... but it doesn't when i moved that to the /erogaciones/ diorectory... any idea of what is happening?
The error...

JSP Error:

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Request URI:/erogaciones/mailer.jsp

Exception:

oracle.jsp.parse.JspParseException: Line # 1, <%@ taglib uri="mailer.jar" prefix="mt"%> Error: java.io.FileNotFoundException: e:\oracle\isuites\apache\apache\htdocs\erogaciones\mailer.jar (El sistema no puede hallar el archivo especificado)