Question: I installed the Xcode 6 GM seed, and I'm trying to create an IPA file for the first time. After archive success, when I click on the Export button, a window appears saying:

> 
> **Failed to locate or generate matching signing assets**
> 
> 
> Xcode attempted to locate or generate matching signing assets and failed to do so because of the following issues.
> 
> 
> * **Your account already has a valid iOS Distribution certificate.**
> 
> 
> If you have your signing identity on another Mac, you can import a developer profile. You can also revoke the current certificate and request one again.
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> 
> 

Here's a screenshot of the error:

![enter image description here](https://i.stack.imgur.com/XJOZQ.png)

Can anybody tell me how to solve this?

Answer: 
I got the same thing the first time, and then I realized that in the dev site there was a new provisioning profile that started with XC:
I restarted xcode and xcode automatically found the XC: profile it created earlier and allowed me to sign the app.
It looked as if the restart of xcode and refresh of signatures (after signing in while uploading/verifying the app on xcode) did the trick
Problem at my end was, in itunesconnect my account was certified as "iOS developer" but not as "iOS app distributor". Had to recreate certificate, download it, open with keychain , and then revalidate the archive. It finally worked. Thanks all