This is a bit strange. Are you starting a completely new installation or are you upgrading a previous?
It makes maybe some sense for a brand new installation, but none for a previous. I believe we will have to take a deeper look into this.
What happens is that the user-id is not returned when asked for (in the first output), but instead some non-int.
The behaviour of the second output is expected as you now do not have any arena data to fill in, as the fetch didn't work.
I believe that most of your and Zazell's problems have to do with the XML-ification of the Economy-page and Arena-page making Mattricks fecth new data on start-up before possibly everything required has initialized.
/Oscar