Error in the logfiles: Warning: Invalid argument supplied for foreach() in osmplayer_add_core_files()

Came across an error in the logfiles:

Warning: Invalid argument supplied for foreach() in osmplayer_add_core_files() (regel 120 van mysite.net\sites\all\modules\mediafront\players\osmplayer\osmplayer.module).

Looking into the code:

foreach ($params['plugins'] as $name => &$plugin) {

changed it into

foreach ($params['plugins'] as $name => $plugin) {

and the error was gone and no differrence on the site .. everything worked.

Could anybody enlighten me on this issue?