File not found error on Windows server.

Hi there.

After updating the plugin, the admin pages stop working and the following error pops up:

Warning: require(D:\[edited]\wp-content\plugins\updraftplus\vendor\composer/../kriswallsmith/assetic/src/functions.php): failed to open stream: No such file or directory in D:\[edited]\wp-content\plugins\updraftplus\vendor\composer\autoload_real.php on line 70 Fatal error: require(): Failed opening required

As you can see from the error, this is a Windows server, with IIS. In a test installation on a Linux server the plugin works fine.