We have a bespoke Joomla component that is used to display training courses and take bookings. A CSV upload can be used to add dates of upcoming courses.
The component stores template Course Masters that contain information such as Course Title, Venue/Location, Start/Finish times, Price etc. Using a Course Master, we simply input the start and finish dates of upcoming courses. For speed we were also able to upload a CSV file containing the start and finish dates but we now receive an error that the CSV file is not recognised. I have tried uploading nothing which also receives the same message so it may be that it is not uploading at all.
IN addition to the fix we'd like it documented what the cause of the issue is and where the any amended files can be found.
I can't imagine this is very complicated. I wonder - The Temporary PHP folder is not set - could it be as simple as that?