Varieties of CTW Files

Primary CTW File Association

.CTW

File Ext:	.ctw
Class:	CTW Compressed File

Compressed file created by CTW (Context Tree Weighting), an effective lossless compression algorithm for compressing text files.

Programmer:	Open Source
Class:	Compressed Files
Subkey:	HKEY_CLASSES_ROOT\.ctw

Software Programs That Open The CTW Compressed File:

CTW by Open Source

Windows

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Sources of CTW Problems

Troubles Opening CTW Files

Missing CTW

Double-clicking your CTW file prompts the message "%%os%% Can't Open CTW File". If this is the case, it's usually due to the fact that you do not have CTW 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: When you have another program installed that you know will open your CTW, you can select it from the other programs listed (see "Show Apps").

Obsolete Version of CTW

Sometimes your installed version of CTW won't support your CTW Compressed File file. Download the latest CTW version from the Open Source website to ensure you have the correct one installed. Most of the time your CTW Compressed File file was created by a newer CTW than what you have installed.

Tip: If you right-click on your CTW file, then select "Properties" (Windows) or "Get Info" (Mac), you can obtain hints about what version you need.

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

Other CTW File Issues

You can still experience errors opening CTW files even with the latest version of CTW installed on your PC. If you are continuing to have errors with loading CTW files, other external issues might be to blame. These issues include:

• CTW file type Registry entries are wrong
• Mistaken removal of the Windows registry CTW description
• Defective install of a CTW program, such as CTW
• Your CTW can't be loaded properly (file corruption)
• CTW file integrity has been compromised by malware
• Drivers associated with CTW software need to be updated
• Too many applications are open on your PC to load your CTW Compressed File file successfully