got this error too and I’m on a Linux Server:
Warning: copy(/www/ <<< CUT >>> /wp-content/themes/kingsize/file-away-iframe-template.php) [function.copy]: failed to open stream: Permission denied in /www/ <<< CUT >>> /wp-content/plugins/file-away/lib/cls/class.fileaway_admin.php on line 81
WordPress: 4.0.1
Server: OS Linux Software Apache Version 64Bit
Type Linux dd7934 3.13.0-43-generic #72-Ubuntu SMP Mon Dec 8 19:35:06 UTC 2014 x86_64
System: PHP 5.2.17-nmm2 Active Plugins 5 Zend 2.2.0
Database: SQL 5.5.40 Build 5.6.21-nmm1-log Charset utf8