Hello,
I just discovered this very nice pluging for WP, and I wanted to try it out. However, I didn't get far because when i try to access the control panel of the plugin (which should be wp-simpleviewer.php right?), I get this error:
Fatal error: Call to undefined function: add_filter() in /home/595/domains/XXXXX/wp-content/plugins/wp-simpleviewer/wp-simpleviewer.php on line 28
I really don't know how to fix this. Do you got any suggestions?