I am back working on this project once again. I just tried a new wordpress installation with frontend pro and still see this issue. You should be able to easily replicate it.
Create a form with an image upload field. Set the maximum file uploads to 2. Then load the form and try uploading 3 or more images. It will work with no errors or warnings. When the data from the form is displayed, all of the images are there.
The limit number of files uploaded does not seem to be working. Can you please look into this and offer a solution.