Doesn’t work at all

After installation all that shows on my blogg is:

“Warning: file_get_contents(): Unable to access /hsphere/local/home/matsd/demofon.se/wp-content/plugins/myweather/templates//template.html in /hsphere/local/home/matsd/demofon.se/wp-content/plugins/myweather/myweather.php on line 236 Warning: file_get_contents(/hsphere/local/home/matsd/demofon.se/wp-content/plugins/myweather/templates//template.html): failed to open stream: No such file or directory in /hsphere/local/home/matsd/demofon.se/wp-content/plugins/myweather/myweather.php on line 236”

Trying to search for a city (Stockholm) on the configuration page renders the following message:

“Warning: array_push(): First argument should be an array in /hsphere/local/home/matsd/demofon.se/wp-content/plugins/myweather/admin.myweather.php on line 122”

“no city found”

Most useless plugin I’ve tried so far…