Can't order packages by name

VisualStudio 2012, NuGet plugin v. 2.6.40627.9000.

Right click on a project, "Manage NuGet Packages"
Select Online (ProGet repository)
Select "Name: Descending" from the combo box "Sort by"

Expected: list of available packages, sorted by name
Actual: error "Could not connect to the feed specified"

Inspecting the HTTP traffic with Fiddler, this is the request issued to ProGet:

GET https://<progetServerAddress>/nuget/default/Search()?$filter=IsAbsoluteLatestVersion&$orderby=concat(Title,Id),Id&$skip=0&$top=30&searchTerm=''&targetFramework='net40'&includePrerelease=true HTTP/1.1
DataServiceVersion: 1.0;NetFx
MaxDataServiceVersion: 2.0;NetFx
NuGet-ProjectGuids: {349c5851-65df-11da-9384-00065b846f21};{fae04ec0-301f-11d3-bf4b-00c04f79efbc}
User-Agent: NuGet VS Packages Dialog/2.6.40627.9000 (Microsoft Windows NT 6.1.7601 Service Pack 1, VS Ultimate/11.0)
Accept: application/atom+xml,application/xml
Accept-Charset: UTF-8
Host: <progetServerAddress>
Accept-Encoding: gzip, deflate

and here is the response:
HTTP/1.1 500 Internal Server Error
Cache-Control: private
Content-Length: 28
Content-Type: text/plain; charset=utf-8
Server: Microsoft-IIS/8.0
X-AspNet-Version: 4.0.30319
Persistent-Auth: true
X-Powered-By: ASP.NET
Date: Fri, 02 Aug 2013 13:17:48 GMT

One or more errors occurred.

Thanks for the report; it would appear that NuGet 2.6 added a concat(Title,Id) function to their orderby query. A bit bizarre (considering it then orders by Id), but then again, it's NuGet...

We'll logged this as PG-119 and will fix this in ProGet 2.1.3.

I've installed v 2.1.3 but the issue seems not solved.
Did you have a target release date for this fix?

Thanks

Unfortunately that issue PG-119 was moved to a future a release because of the priority of the other issues listed in the release notes: http://inedo.com/proget/release-notes#2.1.3

We will try to get this in 2.1.4.