There looks to be a problem in the $WAGLOBAL_remoteRoot setting in the WA_Globals.php file.
Change:
$WAGLOBAL_remoteRoot = "/wwwroot/CMS100/"; //relative path to your PowerCMS files on your remote server.
to:
$WAGLOBAL_remoteRoot = "/CMS100/"; //relative path to your PowerCMS files on your remote server.