Getting a fatal error

I can no longer replace images after a move from Windows to a Linux server. Here is the code:

Warning: move_uploaded_file(/home/content/68/4689868/html/wp-content/uploads/flags/cambodia-1.jpg) [function.move-uploaded-file]: failed to open stream: No such file or directory in /home/content/68/4689868/html/wp-content/plugins/enable-media-replace/upload.php on line 96

Warning: move_uploaded_file() [function.move-uploaded-file]: Unable to move '/tmp/phpXZxhZL' to '/home/content/68/4689868/html/wp-content/uploads/flags/cambodia-1.jpg' in /home/content/68/4689868/html/wp-content/plugins/enable-media-replace/upload.php on line 96

Warning: chmod() [function.chmod]: No such file or directory in /home/content/68/4689868/html/wp-content/plugins/enable-media-replace/upload.php on line 99

Warning: Cannot modify header information - headers already sent by (output started at /home/content/68/4689868/html/wp-content/plugins/enable-media-replace/upload.php:96) in /home/content/68/4689868/html/wp-includes/pluggable.php on line 899
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Version 3.7.1

https://www.ads-software.com/plugins/enable-media-replace/