For the last 24 hours I had problems compiling one of specific project. The project won’t compile because apparently: “O/R Designer validation failed for file: <FileName> .dbml Error: The operation could not be completed. Unspecified error”. The weird thing was that I didn’t change anything in that project, in fact that project was not changed since the beginning of this year when a single comment was added in one of the project’s files. It seems that the project was not to blame. Further checking...