I have a web part for Project Server 2013 that was developed by a colleague that's no longer in the company, and I need to support it. When I try to add the web part to a page I get the following error:
Deploying it from Visual Studio is successful because I can see the web part added using Get-SPSolution in the Powershell, but no errors show in the VS output window, and there was nothing in the Event Viewer.
I searched the entire code for the string "fileOrServerOrConnection", but I found nothing.
I have to admit I'm completely at a loss here because I have no idea how to investigate this problem.
Any suggestions at all? I don't expect a full answer to the problem, but at least some help on how to proceed the investigation would be very much appreciatted.