[T5] Cannot persist field exception

[Jean-Philippe Steinmetz]

Hi All,
 
I'm getting the following error
 
Error persisting field Users/Create:username: java.lang.NullPointerException
 
In my page class I have...
 
@Persist
private String username;
 
public String getUsername()
{
 return username;
}
public void setUsername(String username)
{
 this.username = username;
}
 
and in my template I have
 
<t:label for="username"/>:
<input t:type="TextField" t:id="username" t:validate="required" size="30"/>
 
So i'm not sure why i'd be getting this error. Does anyone have ideas? I
tried setting some default value to username in the setupRender() function
but that doesn't seem to solve the problem.
 
Thanks in advance,
 
Jean-Philippe Steinmetz