It is important to keep in mind that there is often a difference between an item that is broken versus an error message. Error messages could be related to an incorrect setup, configuration or software and as a result, the item is not working, eg. - missing style.css stylesheet.
Hint:
We encourage you to read and search the item comments. Someone else may have experienced the same problem, and your answer may be found in the comments to help you get the item working.
If you are not able to find the answer to your question in item comments or you are unable to locate the Installation Guide or Help Documentation, you will need to contact the author directly for help.