Ponder back to previous page in sign up

In the ERTwoFactorLogin, I decided to add an action to Sign Up!

here it is:
Signup : WOHyperlink {
	directActionName = "CreateERUser";
	actionClass  = "ERUserAction";
	secure = true;
}

When the user clicks Signup, the edit page does show up, however, when I click CANCEL it crashes with NPE:


java.lang.NullPointerException
	at com.webobjects.eoaccess.EOUtilities.primaryKeyForObject(EOUtilities.java:880)
	at er.extensions.eof.ERXGenericRecord.handleQueryWithUnboundKey(ERXGenericRecord.java:1064)
	at er.users.model.ERUser.handleQueryWithUnboundKey(ERUser.java:147)
	at com.webobjects.foundation.NSKeyValueCoding$Utility.handleQueryWithUnboundKey(NSKeyValueCoding.java:494)
	at com.webobjects.foundation.NSKeyValueCoding$_KeyBinding.valueInObject(NSKeyValueCoding.java:894)
	at com.webobjects.eocontrol.EOCustomObject.valueForKey(EOCustomObject.java:1498)
	at com.webobjects.foundation.NSKeyValueCoding$Utility.valueForKey(NSKeyValueCoding.java:447)
	at com.webobjects.directtoweb.ERD2WUtilities.contextValueForKeyNoInferenceNoException(ERD2WUtilities.java:61)
	at er.directtoweb.ERD2WModel.fireRuleForKeyPathInContext(ERD2WModel.java:289)
	at er.directtoweb.ERD2WModel.fireRuleForKeyPathInContext(ERD2WModel.java:270)
	at com.webobjects.directtoweb.D2WContext.inferValueForKey(D2WContext.java:292)
	at com.webobjects.directtoweb.D2WContext.valueForKey(D2WContext.java:180)
	at com.webobjects.directtoweb.D2WContext.valueForKeyPath(D2WContext.java:317)
	at com.webobjects.foundation.NSKeyValueCodingAdditions$Utility.valueForKeyPath(NSKeyValueCodingAdditions.java:149)
	at com.webobjects.foundation.NSKeyValueCodingAdditions$DefaultImplementation.valueForKeyPath(NSKeyValueCodingAdditions.java:217)

I can create a new user.
Thanks
James

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