[Fix] Category can't find methods.
2010-10-22 11:51:02.880 Stuff[11432:207] +[UIImage imageNamedDR:]: unrecognized selector sent to class 0x1f8e938

A couple possibilities:

1.You did not link UIImage+TTShare.m into your target. So while you have the header, you're not compiling the implementation.
2.If this is part of a static library, you need to add -all_load to the Other Linker Flags build setting.