[Plugin: DJ Rotator For WordPress] Adding 1st picture

non MU – WAMP – 100% working WP site for 2 years now.
Install new copy of DY Rotator into WP, activate the plugin, attempt to ‘upload a photo’ – Upload – and I get this error message:

Warning: basename() expects parameter 1 to be string, object given in X:\Websites\wp-content\plugins\dj-rotator-for-wordpress\dj-rotator-for-wordpress.php on line 159

Warning: file_exists() expects parameter 1 to be string, object given in X:\Websites\wp-includes\media.php on line 250

Catchable fatal error: Object of class WP_Error could not be converted to string in X:\Websites\wp-includes\media.php on line 251

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Simply adding a picture too small gives me:
Sorry, but this image does not meet the minimum height/width requirements. Please upload another image
in a pink bar at the top.
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Actual file: media.php line 250 and 251 are as follows:

if ( ! file_exists( $file ) )
return sprintf(__(‘File “%s” doesn’t exist?’), $file);

Actual file: dj-rotator-for-wordpress.php
// if the image is larger than the width/height requirements, then scale it down.
if($width > $djwp_settings[‘img_width’] || $height > $djwp_settings[‘img_height’]) {
// resize the image
$resized = image_resize($file, $djwp_settings[‘img_width’], $djwp_settings[‘img_height’], true, ‘resized’);
$resized_url = $upload_dir_url . basename($resized);
// delete the original
unlink($file);
$file = $resized;
$url = $resized_url;

so I try a brand new picture 100×100. results:
Warning: basename() expects parameter 1 to be string, object given in X:\Websites\wp-content\plugins\dj-rotator-for-wordpress\dj-rotator-for-wordpress.php on line 159

Warning: file_exists() expects parameter 1 to be string, object given in X:\Websites\wp-includes\media.php on line 250

Catchable fatal error: Object of class WP_Error could not be converted to string in X:\Websites\wp-includes\media.php on line 251

http://wordpress.org/extend/plugins/dj-rotator-for-wordpress/