An exception of type 'microsoft.practices.servicelocation.activationexception' occurred in microsoft.practices.enterpriselibrary.exceptionhandling.dll but was not handled in user code

It's not saying "the DLL has a problem" it's saying "there is a problem which shows up in the DLL which the code that calls it isn't dealing with" - and that's normally because your code has done something wrong when it called it. Use the debugger to find out where the error is occuring and look at the call stack to find out where in your code it is called from.
Then put a breakpoint on that line, and add a try...catch block round it so you can look at the exception itself. Run your code, and when it hits the breakpoint look at exactly what you are doing with the code, and what parameters you pass it. Then step the line, and you should be able to look at the exception content to find out what exception messages you have, and that should help you work out what exactly the problem is.

Sorry, but we can't do any of that for you!