Types of MMOD Files

Primary MMOD File Association

.MMOD

File Format:	.mmod
File Type:	MacroModel Molecular Mechanics File

Created by:	Columbia University Chemistry
File Category:	Uncommon Files
Registry Key:	HKEY_CLASSES_ROOT\.mmod

Software Programs That Open The MacroModel Molecular Mechanics File:

MacroModel Molecular Mechanics File by Columbia University Chemistry

Windows

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Troubleshooting Problems Opening MMOD Files

Common Problems Opening MMOD Files

MacroModel Molecular Mechanics File is Not Installed

When you double-click your MMOD file, you may see a dialog box from your operating system stating that it "Cannot Open This File Type". If this is the case, it's usually due to the fact that you do not have MacroModel Molecular Mechanics File for %%os%% installed on your computer. Because your operating system doesn't know what to do with this file, you won't be able to open it by double-clicking.

Tip: If you know of another program that can open your MMOD file, you can try opening it by selecting the application from the programs listed.

Wrong Version of MacroModel Molecular Mechanics File is Installed

In some cases, you might have a newer (or older) version of a MacroModel Molecular Mechanics File file that is unsupported by your installed application version. If you do not have the proper version MacroModel Molecular Mechanics File (or any of the other programs listed above), you may need to try downloading a different version of it, or one of the other software applications listed above. This problem is most common when you have an older version of the software application, and your file was created by a newer version that it cannot recognize.

Tip: Sometimes you can get a clue about the version of MMOD file you have by right clicking on the file, then clicking on "Properties" (Windows) or "Get Info" (Mac OSX).

Summary: In either case, the majority of problems opening MMOD files are related to not having the correct software application installed on your computer.

Other Causes of MMOD File Opening Problems

Although you might already have MacroModel Molecular Mechanics File or another MMOD-associated software installed on your computer, you can still encounter problems opening MacroModel Molecular Mechanics File files. If you are still having problems opening MMOD files, there may be other issues that are preventing you from opening these files. These other problems include (listed in order from most to least common):

• Invalid MMOD file references in the Windows Registry (the "phonebook" of the Windows Operating System)
• Accidental deletion of the description of the MMOD file in the Windows registry
• Incomplete or bad installation of a software application associated with the MMOD format
• Your MMOD file is corrupted (issues with your MacroModel Molecular Mechanics File file itself)
• Your MMOD is infected with malware
• Device drivers of the hardware associated with your MMOD file are corrupt or out-of-date
• Your computer does not have the adequate system resources to open the MacroModel Molecular Mechanics File format