Exception catch problem

I am writing some code to read from a file.

I have the file and buffered readers wrapped in a try/catch statement.

the catch portion is as follows

catch (Exception e)
		{
			  System.err.println("Error: " + e.getMessage());
		}

My problem is, is there is a runtime error occuring when I run the program, and it happening in an objects method that is called within the try/catch statement. So unfortunately whatever the error is, it is unknown to me, so diagnosing it is a real problem.