Hello folks,

I've just uploaded a beta of my application to my test org for the first time. Everything works fine in my dev org, but there seems to be a problem with the custom settings that are bundled with my application.

The first page a user sees when they open my application's tab for the first time is a 'settings' page. As you can see it just lets the user save some authentication info that the app will use later:

public class TCSettingsCon {

    public String password { get; set; }

    public String email { get; set; }    

    public PageReference submit() {
        String id = UserInfo.getUserId();
        TCUserInfo__c currentUserInfo = TCUserInfo__c.getInstance(id);
        if (currentUserInfo == null) {
            TCUserInfo__c userinfo = new TCUserInfo__c(SetupOwnerId=id, email__c=email, password__c=password);
            insert userinfo;
        } else {
            currentUserInfo.email__c = email;
            currentUserInfo.password__c = password;
            update currentUserInfo;
        }  
        PageReference ref = new PageReference('/Apex/TCList');
        ref.setRedirect(true);
        return ref; 
    }
}

 Now, I think the problem comes from the fact that my if-condition isn't evaluating the way it did in the dev org. When I did this in the dev org, if the user hadn't configured the application yet by going to this settings page, currentUserInfo would be null. Well, it doesn't seem to be null in the test org, because I get the following error:

External entry point

Apex script unhandled exception by user/organization: 005U0000000ca6B/00DU0000000H9Wd

Visualforce Page: /apex/tangocard__TCSettings



caused by: System.DmlException: Update failed. First exception on row 0; first error: MISSING_ARGUMENT, Id not specified in an update call: []

Class.tc.TCSettingsCon.submit: line 16, column 13

As you can see, the if-statement is clearly evaluating as false in this case, so my code runs 'update' instead of 'insert'.

So now my question:

Does anyone know why the default value of a custom setting would  be null in the dev org, but not in the test org?

And, what check can I perform to see if the user has already configured the custom settings, so that I can tell my code to do an insert or an update as appropriate?

Thanks in advance!