On updating this plugin to the latest version I get this error code in the backend:
Cannot modify header information – headers already sent by (output started at /wp-content/plugins/wp-gpx-maps/wp-gpx-maps-admin.php:252) in /wp-includes/functions.php on line 6221.
Hello, wich version on php and what kind of hosting are you using?
By the way, it seems there is no write permission in the folder /wp-content/uploads/gpx/~cache
There is apparently extra text in the wp-gpx-maps-admin.php file. You can make the two edits to wp-gpx-maps-admin.php listed in the post https://wordpress.org/support/topic/version-1-7-01-is-not-useable/ which will allow the plugin to work correctly again. I’ve done this on my install and it fixed the header issue.
There are several items listed on the forums related to this update issue.
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