Deleting included resources causes XCode to crash/complain

If I try to delete some image resources from my (iPhone) X开发者_运维技巧Code project via Finder, XCode will complain with errors on next build that it can't find these files.

If I try to delete them via XCode's 'Delete' command, XCode crashes everytime without fail.

If you didnt copy them into the project (instead of simply reference them) then you may have problems like this, although xcode should not crash when you try deleting them.