XUploadPro Installation Issue - Javascript Errors

[Ions]

Just upgraded to Pro to take advantage of the ext_folder feature. I had the free version of the program working without an issue, but now I'm getting no response from the upload_form.html page. I'm getting Javascript errors like 'max_upload_files is undefined'. I'm thinking it's a path issue but I'm not having any luck. Any help would be appreciated. -

EDIT:

I've solved the issue. Permissions problem. -