SOLVED : Errors after installing

Have installed Node Gallery 6.x.20-beta2, Jcarousel 6.x-22 and Node Gallery Jcarousel 6.x-1.x-dev and now get the following after enabling NGJC:

Fatal error: Call to undefined function _node_gallery_give_all_users_permission() in /var/www/aegir/platforms/drupal-6.20/sites/all/modules/node_gallery_jcarousel/node_gallery_jcarousel.install on line 61 Call Stack: 0.0004 344932 1. {main}() /var/www/aegir/platforms/drupal-6.20/index.php:0 0.1910 16948436 2. menu_execute_active_handler() /var/www/aegir/platforms/drupal-6.20/index.php:23 0.1971 17582164 3. call_user_func_array() /var/www/aegir/platforms/drupal-6.20/includes/menu.inc:348 0.1971 17582416 4. drupal_get_form() /var/www/aegir/platforms/drupal-6.20/includes/menu.inc:0 0.5925 18436156 5. drupal_process_form() /var/www/aegir/platforms/drupal-6.20/includes/form.inc:121 0.8028 19682092 6. form_execute_handlers() /var/www/aegir/platforms/drupal-6.20/includes/form.inc:422 0.8029 19684872 7. system_modules_submit() /var/www/aegir/platforms/drupal-6.20/includes/form.inc:782 0.9631 19925992 8. drupal_install_modules() /var/www/aegir/platforms/drupal-6.20/modules/system/system.admin.inc:953 1.3569 20334096 9. array_filter() /var/www/aegir/platforms/drupal-6.20/includes/install.inc:330 1.3569 20334216 10. _drupal_install_module() /var/www/aegir/platforms/drupal-6.20/includes/install.inc:0 1.3600 20335200 11. module_invoke() /var/www/aegir/platforms/drupal-6.20/includes/install.inc:344 1.3600 20335700 12. call_user_func_array() /var/www/aegir/platforms/drupal-6.20/includes/module.inc:462 1.3600 20335892 13. node_gallery_jcarousel_install() /var/www/aegir/platforms/drupal-6.20/includes/module.inc:0 1.3871 20337852 14. node_gallery_jcarousel_set_imagecache_permissions() /var/www/aegir/platforms/drupal-6.20/sites/all/modules/node_gallery_jcarousel/node_gallery_jcarousel.install:70

Any ideas? Should I install different versions of these 3 modules? Bit confused as nobody else is having this problem.

I'm using Drupal 6.20.

Thanks.