Kinds of MMD Files

Main MMD Affiliation

.MMD

Formatting:	.mmd
File Type:	Cumulate Draw Editable File

MMD file is mainly associated with Cumulate Draw, a drawing tool based online and supplied under Mozilla Public License. The MMD file stores diagrams generated in the Internet Explorer program.

Developer:	Cumulate Labs
Function:	Data Files
Folder:	HKEY_CLASSES_ROOT\.mmd

Software Programs That Open The Cumulate Draw Editable File:

Cumulate Draw by Cumulate Labs

Web

Additional MMD Files

.MMD

Formatting:	.mmd
File Type:	MacroModel Molecular Mechanics File

MMD is a file primarily associated with MacroModel, a software for molecular modelling of biopolymers and organic compounds. The software features a number of chemistry force fields to come up with conformational energies and geometry of molecules.

Developer:	Schrödinger, LLC
Function:	Uncommon Files

Software Programs That Open MacroModel Molecular Mechanics File Files:

MacroModel by Schrödinger, LLC

Compatible with:

Windows

Mac

Linux

AIX

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MMD File Complications

Issues Opening MMD Files

Cumulate Draw Disappeared

When you double-click your MMD file, you may see a dialog box from your operating system stating that it "Cannot Open This File Type". Generally, this is experienced in - because Cumulate Draw isn't installed on your PC. 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 MMD file, you can try opening it by selecting the application from the programs listed.

Incorrect Cumulate Draw Version

It is possible that your version of Cumulate Draw isn't able to open your Cumulate Draw Editable File file due to incompatibility. If you've got the wrong version of Cumulate Draw installed, you'll need to install the correct version. Your Cumulate Draw Editable File file was probably created by a newer release of Cumulate Draw than what's currently installed your computer.

Tip: Right-clicking on your MMD, then clicking "Properties" (Windows) or "Get Info" (Mac), can provide clues about your file version.

Ultimately, most of the difficulties opening MMD files are due to having the wrong version of Cumulate Draw installed.

Additional MMD Opening Issues

Although you might already have Cumulate Draw or another MMD-associated software installed on your computer, you can still encounter problems opening Cumulate Draw Editable File files. There can be other issues - unrelated to software - preventing you from opening MMD files. Additional factors include:

• MMD file type Registry entries are wrong
• Accidental deletion of the description of the MMD file in the Windows registry
• Incomplete or bad installation of a software application associated with the MMD format
• Your MMD can't be loaded properly (file corruption)
• Malware-tainted MMD file can't be opened
• Hardware associated with MMD has outdated drivers
• Your computer does not have the adequate system resources to open the Cumulate Draw Editable File format