Exception in thread "Thread-20" java.lang.ArrayStoreException

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#1

Olá galera, boa tarde.
Estou tendo o seguinte problema ao tentar enviar email pela minha aplicação:
[color=red]Exception in thread “Thread-20” java.lang.ArrayStoreException
at java.lang.System.arraycopy(Native Method)
at java.util.ArrayList.toArray(Unknown Source)
at org.apache.commons.mail.Email.toInternetAddressArray(Email.java:1268)
at org.apache.commons.mail.Email.buildMimeMessage(Email.java:1069)
at org.apache.commons.mail.MultiPartEmail.buildMimeMessage(MultiPartEmail.java:254)
at org.apache.commons.mail.HtmlEmail.buildMimeMessage(HtmlEmail.java:514)
at org.apache.commons.mail.Email.send(Email.java:1162)
at xpro.xmanager.xutil.mail.SendMail.run(SendMail.java:83)
[/color]

Minha classe de configuracao do email é esta (SendMail.java):

[code]private HtmlEmail emailConfig() throws EmailException {
EmailConfig cfg = new EmailConfig();
HtmlEmail email = new HtmlEmail();
Set copias = new HashSet();
email.setDebug(true);
email.setHostName(cfg.getHostName());
email.setFrom(cfg.getFrom(), cfg.getTitle());
email.setCharset(cfg.getCharset());
email.setAuthentication(cfg.getAuthentication(), cfg.getPassword());
email.setSmtpPort(Integer.parseInt(cfg.getSMTPPort()));
email.setSslSmtpPort(cfg.getSMTPPort());
for(String copiasEmail : cfg.getCopiasEmail().split(",")) {
copias.add(copiasEmail);
}
email.setCc(copias);
return email;
}

   @Override
public void run() {
	try {
		email.send();
	} catch (EmailException e) {
		throw new RuntimeException(e);
	}
}

[/code]

desde já agradeço.

#2