Visual Studio Unit Testing Framework tests failing

I have a small application and 2 unit tests look for exceptions and so I have the decorator [ExpectedException(typeof(ArgumentException))] on them. When I run the tests individually everything is fine. If I run all, the 2 with the exception decorators will fail and the others succeed. If I run a group of tests where this 1 test that has the ExpectedException on it, that test will fail. The tests are really small and below are the 2 that have the exception decorator.

        [TestMethod]
        [ExpectedException(typeof(ArgumentException))]
        public void WrongArgCountExceptionThrown()
        {
            List<string> args = new List<string>
            {
                "-t",
                "table_name",
                "-d",
                "2016-06-30"
            };

            Program prg = new Program();
            prg.Run(args.ToArray(), new Data(logRepo.Object, queueRepo.Object));
        }

        [TestMethod]
        [ExpectedException(typeof(ArgumentException))]
        public void WrongArgFormatExceptionThrown()
        {
            List<string> args = new List<string>
            {
                "t",
                "table_name",
                "-d",
                "2016-06-30",
                "-i",
                "1"
            };

            Program prg = new Program();
            prg.Run(args.ToArray(), new Data(logRepo.Object, queueRepo.Object));
        }