Hello everyone,

Do you have the PC version of Assassin's Creed Revelations and are receiving one of the following Errors after downloading the Patch 1.03?
  • ACRSP.exe incorrect source file
  • ACREP.exe error occured

This could be a Region Specific Issue and sometimes Patches are specific to each Region.
Please try the following steps-
  • Uninstall the game
  • Reinstall and allow the game to auto-update

Please make sure you install the game to the default location given during install to avoid any mix up with the Patches.

If this still does not solve your issue, you need to contact Ubisoft Support directly. You can follow the links in my signature.
Thanks