'Argument is not an array' error in Embedded Video

I created an Embedded Video field with 'YouTube' as a provider (other settings default).
After saving this field I`m getting an errors:

"* Warning: array_merge() [<a href='function.array-merge'>function.array-merge</a>]: Argument #2 is not an array in _emfield_emfield_widget_settings() (line 163 of ~sites\all\modules\emfield\emfield.cck.inc).
    * Warning: array_merge() [<a href='function.array-merge'>function.array-merge</a>]: Argument #1 is not an array in _emfield_emfield_widget_settings() (line 163 of ~sites\all\modules\emfield\emfield.cck.inc).
    * Warning: array_merge() [<a href='function.array-merge'>function.array-merge</a>]: Argument #2 is not an array in emvideo_widget_settings() (line 584 of ~sites\all\modules\emfield\contrib\emvideo\emvideo.module).
    * Warning: array_merge() [<a href='function.array-merge'>function.array-merge</a>]: Argument #2 is not an array in _emfield_emfield_widget_settings() (line 163 of ~sites\all\modules\emfield\emfield.cck.inc).
    * Warning: array_merge() [<a href='function.array-merge'>function.array-merge</a>]: Argument #1 is not an array in _emfield_emfield_widget_settings() (line 163 of ~sites\all\modules\emfield\emfield.cck.inc).
    * Warning: array_merge() [<a href='function.array-merge'>function.array-merge</a>]: Argument #2 is not an array in emvideo_widget_settings() (line 584 of ~sites\all\modules\emfield\contrib\emvideo\emvideo.module)."

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Would be very thankful for helping with solving this