iOS Question Erorr after changing certificate & profile

Firstly,
You don't need to change your certificate to add a new test device. You just need to update the mobile provision after adding the device UUID.

The the error says "wrong password", have you changed the password to your private signing key?

Hi Andrew thank you for the reply. Yes I actually came right, it was that my password was blank under 'Tools' --> 'Private Sign Key'.
Thanks for the advice about the Profiles good to know. I just have another couple questions if you don't mind.

I currently have 2 identifiers set up in my Apple account, one is the 'Main' identifier which is like this:
com.CompanyName.*
And the other is the app specific identifier like this:
com.CompanyName.AppName (This is the same name I have in 'Project' ---> 'Build Configurations' ---> 'Package')

My first question is, do I need to have 2 identifiers, or can I just use the 'Main' one and then change the 'Package' name in the project to it, ie ending in .* ?

My other question is, if I do have to have 2 identifiers, must I use the one ending in 'AppName' when I want to put the App on the Apple Store (I did it a while ago, so can't remember what I did ) to create the 'App Store' profile with?

Hope that makes sense

Thanks for your time,

Regards
Jacques.

.* is a wildcard. It means that the package name can be:
com.CompanyName.somethinghere

You can use the wildcard provision profile + app id as long as you don't need push notifications or other features that require an explicit app id. Note that you can always change the provision profile.

OK cool thanks Erel, that makes sense.