Are there any console (debug log) errors?
Your sure the files exist? (there is a file with those names in your assets folder now?)
Did you try searching them by name in your actions browser?
Find them in your project folder, remove them, re-add them (maybe just those two). Any change? Any new errors popup?
Try renaming the file name (and then opening, and renaming from within the file, as they must match).
No luck? You might have to ask the developer, because we cannot see the files.