the error is telling you that you are trying to call a function which isn't there. This could be because you've misspelt the functions, you haven't included the file with the function in properly or the creators of the program have made a mistake.
What I would do is search through the files that they have provided you with and see if you can find this function, then trace back to the file you're getting the error in to see if all nececarry files are being included.
If you can't find the function then I would check through the documentation and see where you made the typo.
Good Luck, let me know how you get on
Rob