I had the problem also. Solution: Go to the installation directory of the game. For me: "Origin Games \ Dragon Age Origins Ultimate Edition \". After the "_installer" directory because you can find the file: "DAUServiceSetup". These run. After the file: "DAOU_UpdateAddinsXML".
And already would have all DLCs and addons be available. For safety you should start the game, the home screen "Alt + Tab" to switch to the Windows desktop.
Pressing the Windows key + R, then give a "services.msc" and press ENTER. Search and click Start if it is not already started - in the processes according to "Content Update Dragon Age Origins". Best yet put on automatically.
I hope I could help.
A very great game by the way. My recommendation to buy ^^
By the way, it worked with me not with the Patch 1.05, therefore the complicated way .....