I get the following problem activating a feature in powershell:
Enable-SPFeature : The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
I can activate the feature just fine through VS (by deploying the solution) as well as the browser.
The feature has feature receiver code. I have another feature (with feature receiver) which activates just fine through Powershell.