I've seen this a few times... and am stuck with it again today...

I drag an llblgenpro datasource to the design view. I click the smart tag and choose "Configure Data Source" . The dropdown list where I would normally choose an EntityCollection or TypedList or TypedView is empty and no matter how much deleting of references or fiddling with .dlls I do I can't get it to fill up again.

I've just installed v2.6 and wonder if there clash somewhere? Any ideas what could be causing this?

Did you try re-building the referenced projects/assemblies? I often solved that behavior this way.

Also check if VS.NET 2005 sp1 is installed if you're using VS.NET 2005, as that solves the issue as well most of the time, as it's caused by a bug in VS.NET 2005 unfortunately... (it gets confused due to tempassemblies it creates itself... )

I'm using VS2008 with the following Hotfixes

(KB946308 ) KB946308 (KB946344) KB946344 (KB946581) KB946581 (KB947171) KB947171 (KB947173) KB947173 (KB947180) KB947180 (KB947540) KB947540 (KB947789) KB947789 (KB948127) KB948127

and llblgenpro 2.5 final March 28th 2008

I tried uninstalling v2.6, reinstalling v2.5, creating a new Web Application, regenerating my DAL and still had the problem.

The solution: I deleted all of the llblgen generated code. Generated it from scratch, rather than regenerate into the existing folder.