Graphs not exporting

[ddalton]

I have the poller set to time 4 (every 20 min) and a few graphs export, no errors appear and then it export graphs just appears to stop? how can I find out why? how do I turn debugging on?

[ddalton]

I turned on debug level logging and there are no errors in the log, it should be exporting 104 graphs and it exports 4?

[NTPT]

I suspect, that directory to where you want to export must be writable - not for user witch run webserver, but for user witch run the poller.php too. I think it should be mentioned in the docs.