The file should definitely exist in the location but it is not in the program files portion it is in the users files. Dave, when did you last use this functionality in a working state? Was it before any thing newer was installed? If so please let us know what you can about the situation. Once the file is installed with the extension it should not get deleted. The only thing I can think of that may cause that would be an error during the install of another extension. Please let us know the details and I can open up a ticket for you so we can try to figure out what is going on.