I cannot help specifically to this problem however I can offer some advice. Add some text to the files you are changing, make sure you can see that text. Use exit if you are dealing with php to make sure you are hitting files that you think you are hitting. I would start from the top of the tutorial and work my way down to make sure I am hitting all of the required parts. Sometimes with these types of packages there are a couple layers of files that may be there so that is why I am suggesting that part. I remember interspire was a pita in that department.
Also if you are feeling frustrated get up walk around for a minute then try again.