Fixing df394b.tmp and ef7194.tmp Errors
To combat software piracy, software publishers often employ third-party copy protection utilities. These utilities are integrated with the game or application files on the physical media that contains your application. If you're using a DVD or CD image (like an ISO, MDS, or BIN file), certain parts of the copy protection may still be present in the image file. These residual parts check to see if there is actually a physical, legitimate disk for the software inserted. The copy protection may also attempt to determine if you are running CD/DVD emulation software, like Windows Daemon Tools or Alcohol 120%.
Understanding ~df394b.tmp and copy protection
The most popular copy protection solution for Windows applications and games is SafeDisc. SafeDisc is produced by Macrovision Corporation, a company that specializes in copy-protection solutions and software. Unfortunately, due to bugs in the SafeDisc program, games and applications protected by the Macrovision software may still crash even if you have a legal copy of the software.When you run an executable that relies on SafeDisc-protected media, SafeDisc loads itself in to your computer's RAM. If your application is functioning normally, the SafeDisc utility will successfully decrypt the executable once it has verified that you are not using pirated software.
Causes and fixes for ~df394b.tmp errors
If SafeDisc has difficulties loading itself in to RAM, the application will fail to start. This will generate an error message referencing a module named ~df394b.tmp or ef7194.tmp. SafeDisc can fail upon attempting to load itself in to RAM for one of several reasons.
The most likely reason is that the last time you ran your software, SafeDisc was unable to unload the module properly when you terminated the application. With the module still loaded from the previous instance of the application, SafeDisc will encounter a conflict when it attempts to load the module again the next time you run your software.
Although restarting your computer is perhaps the most thorough way to ensure that all SafeDisc-related modules are unloaded before you attempt to run an application, ejecting and re-inserting all of your physical and virtual removable media (i.e., mounted CD and DVD images) should also work.
If ejecting your physical and virtual media does not fix the ~df394b.tmp or ef7194.tmp errors, you can try updating your SafeDisc software from Macrovision. Visit Macrovision's website and download the latest version of the copy protection software.
If you're running a Socket 754, 939, 940, or F AMD processor, and you're running your applications on Windows XP 32-bit edition, you should download the latest patch for AMD processors from AMD's website.
Certain software will trigger these failures. If you're running PGP on your system, you may have to temporarily disable or uninstall it for SafeDisc to run properly. Your ASPI drivers may also be out of date; you can find the latest ASPI drivers for your optical devices at your optical device's manufacturer's website. If you are using CD/DVD emulation software, you may need to locate a secondary utility that hides your emulation software from SafeDisc. Finally, ensure that you have the latest patches installed for the application.
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