[Plugin: NextGEN Gallery] Flash uploader not working

I’m using WP 3.0.3 Multisite and NGG 1.7.2. Everything was working fine until one of the last updates, unfortunately I can’t tell exactly which one.

When trying to upload images, the Flash uploader will show the following error message:

ERROR: <image-filename> :
Fatal error: Call to undefined function wpmu_enable_function() in <local-path>/wp-content/plugins/nextgen-gallery/lib/multisite.php on line 21

In order to get it to work, I edited that file and commented the following code (lines 41-51):

if ( (is_multisite()) && wpmu_enable_function('wpmuQuotaCheck'))
     if( $error = upload_is_user_over_quota( false ) ) {
          nggGallery::show_error( __( 'Sorry, you have used your space allocation. Please delete some files to upload more files.','nggallery' ) );
          return true;
     }
return false;

Of course, this disables the quota check. It’s not an ideal solution, but at least allows the Flash uploader to work for now. Standard uploader seems to be working fine.

Hope this helps.