Login failed after compile

Hi,

i can’t use login box after building spark projet with eclipse.

log exception :

ATTENTION: Exception in Login:

SASL authentication failed:

at org.jivesoftware.smack.SASLAuthentication.authenticate(SASLAuthentication.java: 327)

at org.jivesoftware.smack.XMPPConnection.login(XMPPConnection.java:438)

at org.jivesoftware.LoginDialog$LoginPanel.login(LoginDialog.java:860)

at org.jivesoftware.LoginDialog$LoginPanel.access$400(LoginDialog.java:200)

at org.jivesoftware.LoginDialog$LoginPanel$1.construct(LoginDialog.java:606)

at org.jivesoftware.spark.util.SwingWorker$2.run(SwingWorker.java:131)

at java.lang.Thread.run(Unknown Source)

spark login box return “invalid username or password”. but login is correct.

someone has an idea to solve the problem ?