Could not load file or assembly 'xxx' or one of its dependencies. An attempt was made to load a program with an incorrect format

Question

I just checked out a revision from Subversion to a new folder. Opened the solution and I get this when run:

Could not load file or assembly \'xxxx\' or one

Answer 1

It's definitely an issue with some of the projects being built for x86 compatibility instead of any CPU. If I had to guess I would say that some of the references between your projects are probably referencing the dll's in some of the bin\debug folders instead of being project references.

When a project is compiled for x86 instead of 'Any CPU' the dll's go into the bin\x86\debug folder instead of bin\debug (which is probably where your references are looking).

But in any case, you should be using project references between your projects.