Unable to remove application

When clicking Apps shortcut and choosing either to check the application and then uninstall or hovering over the application and choosing uninstall, I receive the same error. Would like to get rid of the application's placeholder.
Application was uninstalled directly from phone after first use of AirDroid. Have cleared browser cache, restarted phone and computer. Problem exists in Firefox 8.0 and Chrome 16.0.912.63 beta running on Ubuntu 11.10.

Sorry I'm lost. Did you mean you failed to remove a certain app from your device with AirDroid? What exact error message did you get?