Recommendations for Crashes on Save/Load
Occasionally, on installation, a map file can become corrupted. We suspect this is caused by certain hard drive/hard drive controller/CD-ROM combinations. If this happens, it is likely it will cause the game to crash or hang on a map transition. The following are suggestions that may help you fix this problem. Try them in order; if the first fix doesn't work, move on to the next one.
Lower texture detail during the transition

We have heard of limited success in getting through level transitions with crashing by temporarily lowering World and Model Detail to their lowest setting for the transition. These Detail levels can be raised to their normal levels after the transition has completed.


(Advanced users only!) Install from a hard drive

If you have recurring problems or have problems that don't provide a useful error message, there have been reports of success by installing the entire game from a hard drive, rather than the Deus Ex CD-ROM. To do this:

1) Make sure you have enough space available on your hard drive for both the installed game and the CD image -- about 1.4GB.
2) Create a folder called "Deus Ex Install" that will contain the CD image.
3) Copy the contents of the CD into this folder.
4) After it has finished copying, run the setup file in "Deus Ex Install" and install as you would from the CD.
5) After you have finished installation, you can delete the "Deus Ex Install" directory.


(Advanced users only!) Re-copy the map from the CD

1) Determine which map is causing the crash based on the error message. Within the dialog's error message, you should find something that looks like "01_NYC_UNATCOIsland". You are looking for something that begins with two numbers and sounds like a location. Add ".dx" to the end, and you will have the map name. In this case, it is "01_NYC_UNATCOIsland.dx".

2) Copy that map from the "Maps" directory on your Deus Ex CD to your installed "Maps" directory. In our example, if your CD-ROM drive is "F:" and you've installed to "C:\DeusEx", you would copy "F:\Maps\01_NYC_UNATCOIsland.dx" to "C:\DeusEx\Maps\01_NYC_UNATCOIsland.dx".

3) All savegames that contain data from the corrupted map may also be corrupted, so you should delete any savegame directories that contain the map (with a ".dxs" extension, rather than ".dx"). Start with your most recent savegame -- that is, the one with the highest number -- and work backward, continuing until you find a savegame that does not contain the map in question.

For example, if you have 20 savegames (in your "Save" folder), start with Save0020 and work backward to Save0001. If Save0020 and Save0019 contain "01_NYC_UNATCOIsland.dxs", but Save0018 doesn't, you should delete the Save0020 and Save0019 folders. It is possible that no savegames will contain the map in question, and you won't have to delete any savegames.

4) At this point, you should be able to load your most recent remaining savegame and continue