site_archiver@lists.apple.com Delivered-To: cocoa-dev@lists.apple.com On Mar 31, 2010, at 11:21 AM, Jean-Nicolas Jolivet wrote: —Jens_______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/site_archiver%40lists.apple... - I tried launching the tasks on the main thread but it locks up my UI and I can't update my progress bar... Only if you explicitly call -waitUntilExit. So don't do that. Normally the task API is asynchronous. So launch it, then go about your business until you get an NSTaskDidTerminateNotification. This email sent to site_archiver@lists.apple.com