Error when trying to upgrade

Hi

I am trying to upgrade to the latest version of Enfold theme but keep getting error messages. Any idea on how to solve this problem?

I get the following error:
Warning: unlink(C:\Users\Nina\AppData\Local\Temp/enfold.zipAWSAccessKeyIdAKIAJYG5ROGJ6X7Z3M6QExpires1467032075Signatureh58yCsRUbnMmy4QRMoXt8VeIYVQ3Dresponse-content-dispositionattachment3Bfilename3Dthemeforest-4519990-enfold-responsive-multipurpose-theme-wordpress-theme-KKFtMc.tmp): Invalid argument in C:\Users\Nina\Documents\Websites\www.landdyreklinikk.dev\wp-admin\includes\file.php on line 493
Call Stack
# Time Memory Function Location
1 0.0246 271192 {main}( ) ..\update.php:0
2 2.5052 27219592 Theme_Upgrader->bulk_upgrade( ) ..\update.php:213
3 2.5172 27372048 WP_Upgrader->run( ) ..\class-wp-upgrader.php:1656
4 2.5210 27365968 WP_Upgrader->download_package( ) ..\class-wp-upgrader.php:673
5 2.5213 27366080 download_url( ) ..\class-wp-upgrader.php:248
6 2.5695 27368472 unlink ( )
..\file.php:493
An error occurred while updating Enfold: Download failed. Could not open handle for fopen() to C:\Users\Nina\AppData\Local\Temp/enfold.zipAWSAccessKeyIdAKIAJYG5ROGJ6X7Z3M6QExpires1467032075Signatureh58yCsRUbnMmy4QRMoXt8VeIYVQ3Dresponse-content-dispositionattachment3Bfilename3Dthemeforest-4519990-enfold-responsive-multipurpose-theme-wordpress-theme-KKFtMc.tmp

Regards
Nina