It may be that a registry key is missing. I fixed mine this way: 1. Open your favorite plain-text editor. 2. Paste the code below into a new file: Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\Software\sixteen tons entertainment\Emergency 4] "InstallDir"="C:\\Program Files\\sixteen tons entertainment\\Emergency 4" 3. Save the file as 'Emergency4RegistryKeyFix.reg' (technically you can choose any file name you desire, so long as the extension is '.reg' ) 4. Locate and double-click the registry file you just saved, and choose yes when asked to add the information to the registry. It may be important to note, however, that the fix may be different for 64-bit computers. The fix I gave should work on all 32-bit computers.