What are hotkeys.dtd Error Messages?

General hotkeys.dtd Runtime Errors

hotkeys.dtd file errors often occur during the startup phase of ChemDraw Ultra, but can also occur while the program is running. These types DTD errors are also known as “runtime errors” because they occur while ChemDraw Ultra is running. Here are some of the most common hotkeys.dtd runtime errors:

• hotkeys.dtd could not be found.
• hotkeys.dtd error.
• hotkeys.dtd failed to load.
• Error loading hotkeys.dtd.
• Failed to register hotkeys.dtd / Cannot register hotkeys.dtd.
• Runtime Error - hotkeys.dtd.
• The file hotkeys.dtd is missing or corrupt.

Most DTD errors are due to missing or corrupt files. Your hotkeys.dtd file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with ChemDraw Ultra), or deleted by a malware infection. Furthermore, hotkeys.dtd file corruption could be caused from a power outage when loading ChemDraw Ultra, system crash while loading or saving hotkeys.dtd, bad sectors on your storage media (usually your primary hard drive), or malware infection. Thus, it’s critical to make sure your anti-virus is kept up-to-date and scanning regularly.

How to Fix hotkeys.dtd Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your hotkeys.dtd issue. These troubleshooting steps are listed in the recommended order of execution.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

1. Hit the Windows Start button
2. When you see the search box, type "System Restore" and press "ENTER".
3. In the search results, find and click System Restore.
4. Please enter the administrator password (if applicable / prompted).
5. Follow the steps in the System Restore Wizard to choose a relevant restore point.
6. Restore your computer to that backup image.

If the Step 1 fails to resolve the hotkeys.dtd error, please proceed to the Step 2 below.

You can uninstall ChemDraw Ultra software by following these instructions (Windows XP, Vista, 7, 8, and 10):

1. Hit the Windows Start button
2. In the search box, type "Uninstall" and press "ENTER".
3. In the search results, find and click "Add or Remove Programs"
4. Find the entry for ChemDraw Ultra 9 and click "Uninstall"
5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall ChemDraw Ultra software.

If this Step 2 fails as well, please proceed to the Step 3 below.

ChemDraw Ultra 9

CambridgeSoft

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many hotkeys.dtd error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

1. Hit the Windows Start button
2. In the search box, type "Update" and press "ENTER".
3. In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
4. If updates are available for download, click "Install Updates".
5. After the update is completed, restart your PC.

If Windows Update failed to resolve the hotkeys.dtd error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

If Those Steps Fail: Download and Replace Your hotkeys.dtd File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate hotkeys.dtd file version. We maintain a comprehensive database of 100% malware-free hotkeys.dtd files for every applicable version of ChemDraw Ultra. Please follow the steps below to download and properly replace you file:

1. Locate your Windows operating system version in the list of below "Download hotkeys.dtd Files".
2. Click the appropriate "Download Now" button and download your Windows file version.
3. Copy this file to the appropriate ChemDraw Ultra folder location:
   
   Windows 10: C:\ProgramData\CambridgeSoft\ChemOffice2010\ChemDraw\ChemDraw Items\
   
4. Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.

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