Tips to open CM file

Can't open the CM file? You are not the only one. Thousands of users face similar problems every day. Below you will find tips on how to open CM files as well as a list of programs that support CM files.

CM file extension

File Name CLEO Custom Mission
File Developer Rockstar Games
File Category Game Files

The CM file is supported on 1 operating systems. Depending on your operating system, you may need different software to handle the CM files. Below is a summary of the number of programs that support and open the CM file on each system platform.

Operating systems
  • 2
  • 0
  • 0
  • 0
  • 0
  • 0

What is CM file?

The file with the extension CM is the Game Files file type. It was designed by Rockstar Games. Additionally, the Game Files category contains 1509 of other files. CLEO Custom Mission is supported by 1 operating systems. Although it can be found with greater or lesser success on any operating system, it will only be useful on Windows. The Grand Theft Auto: San Andreas application is recommended to open the file. It was released by Rockstar Games, Inc.. This file type can also be opened by 1 other programs. CLEO will apply when it is not possible to use Grand Theft Auto: San Andreas.

How to open CM file?

The most common problem when using CLEO Custom Mission is that a specific CM is not associated with the program. Thus, when you open CM, the program selection wizard or some other program starts. This can be quickly resolved by following the instructions below.

The first thing you should do is just "doubleclick" on the CM file icon you want to open. If the operating system has an appropriate application to support it and there is also an association between the file and the program, the file should be opened.

Step 1. Install Grand Theft Auto: San Andreas

An often overlooked issue is to make sure that Grand Theft Auto: San Andreas is installed on the computer. The easiest method is to use the system search engine by entering the program name Grand Theft Auto: San Andreas in it. In the absence of an appropriate program, its installation in the vast majority of cases will fix the problem. Below is a list of programs that support the file CM.

Programs to open CM file

Remember to download programs supporting CM files only from verified and safe sources. We suggest using the websites of software developers.

Step 2. Create association of Grand Theft Auto: San Andreas with CM files

If the application is or has been freshly installed, but the CM file still does not use the Grand Theft Auto: San Andreas program, it means no association. The association can be created using the drop-down list available by right-clicking on the file and selecting Properties. The displayed window will contain information about the program that supports this type of file. Using the "Change" button we can set the program to handle this type. If there is no software on the list, simply select "Browse" and manually select the directory where the application is installed. Checking the "Always use the selected program ..." box will permanently associate the CM file with the Grand Theft Auto: San Andreas program.

Step 3. Update Grand Theft Auto: San Andreas to the latest version

If, however, after binding Grand Theft Auto: San Andreas with CLEO Custom Mission there were still problems, you should update the program to the latest version. This can be done using the application (if it provides such options) or from the Rockstar Games, Inc. website and install the latest version.

Step 4. Check for the following problems with the CM file

The problem may also be with the file itself if the above steps don't work. The most common file problems are:

The affected file may be 0 KB or smaller than expected. This suggests truncating the CM file contents when downloading or copying. Downloading the file again should fix the problem.
The most common cause here is computer viruses. A virus scan using an up-to-date antivirus program should fix the problem. If this is not possible, you can use the online scanner. For the best results, we will scan the entire operating system, not just our CM file. Sometimes virus-infected CM files cannot be recovered, so make a backup in advance.
A typical compatibility error - the program does not support the older version of the CM file. Help should be sought from the software developer, as they usually recommend using free file converters or installing an older version of the program.
There can be many reasons for the failure. Repairing is very dependent on the file type. Some programs offer the ability to automatically repair CM file corruption. The easiest way is to restore the file from a backup, if there is one, or contact Rockstar Games
The program can also signal the fact of encryption. The encrypted CM files can be used by the device on which they were encrypted, on any other device it is required to have the appropriate cryptographic key and decrypt the file before its recovery.
Some of the system directories are excluded from modification. The problem is only writing to the file, not reading it. If possible, you can try to move the CM file to another location.
This problem usually affects more complex files. Some file types can only be opened in one program at a time. Closing other programs should help. Sometimes you have to wait for the session to the file CM to close. Antivirus programs or a backup being made may lock the file for a while without the user's knowledge. If the problem persists, restart the machine.