You need the ficedula.dll to run many of ficedula's programs. There are numerous links and probably hundreds of posts with the same question answered already...search next time.
For SaiNt's Hi-Res patch, be sure it is a fresh official 1.02 patch exe. Check the dialog from SaiNt's patch if it completed the patch successfully. Also be sure the settings in FF7Config.exe are set correctly. This is also discussed on his project thread.
