MS SQL Migration to Oracle

I'm having all sorts of trouble. Using the SQL Developer, I can make connections to both databases (my newly created Oracle one and the old MS SQL one) but when I try to create a Migration Repository it fails with the message:
"Script execution failed. Manually delete the repository before retrying."
Even if I JUST created the database. It also has the errors (after I click "OK"):
"SQL Error on Script Execution.
Try deleting repository before Creating Repository"
and
"The repository installation has failed. Please check the user you are registering and make sure that objects of the same name do not already exist."
I also tried to delete the repository after this and it looks like it's deleting something, but I can run the operation again and it looks like it's doing the same thing (leading me to believe it doesn't run properly because...well...how can you delete something twice? :P
Any help is greatly appreciated.

Here is a progression of the steps I'm taking in picture:
Start
http://img136.imageshack.us/my.php?image=oracle1ry9.jpg
http://img504.imageshack.us/my.php?image=oracle2xt5.jpg
http://img401.imageshack.us/my.php?image=oracle3id0.jpg
http://img185.imageshack.us/my.php?image=oracle4pp7.jpg
http://img76.imageshack.us/my.php?image=oracle5vi1.jpg
End
http://img73.imageshack.us/my.php?image=oracle6jl5.jpg
Message was edited by:
Cybercat

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