Dave,
Hope all is good with you. Downloaded the plugin at the weekend and really enjoying seeing my data in visual form. Current version I have is 0.7.07.
I think I have found a bug, and can replicate.
Selecting Manual update is updating the CSV file every 15 seconds with no schedule or trigger to update yet created.
For reference this is the second csv device created, as my first updates every 5 minutes..
Create a new csv device and select "manual update"
Add a name and a variable to the data list ie add name, id and data in the fields and add item
Save
the csv data now updates every 15 seconds without any further actions, schedule or tiggers etc.
Thanks
Mat