Varieties of MKR Files

Leading MKR Type

.MKR

File Name:	.mkr
Category:	Train Simulator Marker File

MKR file extension is associated with the Train Simulator, a train driving simulation computer game

Author:	Microsoft Corporation
Group:	Game Files
Subkey:	HKEY_CLASSES_ROOT\.mkr

Software Programs That Open The Train Simulator Marker File:

Microsoft Train Simulator by Kuju Entertainment

Windows

Alternative MKR Types

.MKR

File Name:	.mkr
Category:	My Knowledge Representation Data

MKR file is mKR (my Knowledge Representation) language data file implemented in the mKE (my Knowledge Explorer) program. mKE reads statements, commands and questions and stores the resulting knowledge in mKB (my Knowledge Base).

Author:	Open Source
Group:	Data Files

Software Programs That Open My Knowledge Representation Data Files:

my Knowledge Explorer by Open Source

Compatible with:

Windows

Mac

Linux

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Understanding MKR Issues

Common MKR Opening Problems

Microsoft Train Simulator Not Present

If you attempt to load your MKR file, you experience a message such as "Can't Open MKR Files". Generally, this is experienced in %%os%% because Microsoft Train Simulator isn't installed on your PC. This will prevent you from double-clicking to open the MKR file because the OS doesn’t know how to handle it.

Tip: When you have another program installed that you know will open your MKR, you can select it from the other programs listed (see "Show Apps").

Microsoft Train Simulator is Out-of-Date

In other instances, your Train Simulator Marker File file version may not be supported by your version of Microsoft Train Simulator. Download the latest Microsoft Train Simulator version from the Kuju Entertainment website to ensure you have the correct one installed. Your Train Simulator Marker File file was probably created by a newer release of Microsoft Train Simulator than what's currently installed your computer.

Tip: Investigate your MKR file by right-clicking and selecting "Properties" to find clues on what version you need.

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

More Causes of Problems Opening MKRs

Although you might already have Microsoft Train Simulator or another MKR-associated software installed on your computer, you can still encounter problems opening Train Simulator Marker File files. There can be external issues inside of %%os%% that are causing these errors when opening MKRs. Problems unrelated to software:

• File references in the Windows Registry for MKR are wrong
• Mistaken removal of the Windows registry MKR description
• Corrupt install of Microsoft Train Simulator or other MKR-related program
• Something has caused file corruption of your MKR
• Your MKR has adversely impacted by malware
• MKR-related hardware has device drivers that obsolete
• Windows cannot load your Train Simulator Marker File file due to insufficient resources (eg. RAM)