M File Complications
Frequent M Opening Issues
Notepad++ Disappeared
Double-clicking your M file prompts the message "%%os%% Can't Open M File". When this happens, it is commonly due to Notepad++ missing in %%os%%. This will prevent you from double-clicking to open the M file because the OS doesn’t know how to handle it.
Tip: If you have another software that you know opens M files, you can select it by hitting the "Show Apps" button.
Outdated Notepad++
Occasionally, you might have an outdated version of Notepad++ installed that's incompatible with your MATLAB Source Code File type. If you do not have the proper version Notepad++ (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 issue mainly occurs when your MATLAB Source Code File file was created by a newer version of Notepad++ than you have on your PC.
Tip: You can sometimes get hints about the right program version by right-clicking on the M file, selecting "Properties", and looking at the version information.
Summary: Not having the right Notepad++ version on your computer can cause problems opening M files.
Associated Difficulties Loading M Files
Errors opening MATLAB Source Code File files can still occur even with the latest Notepad++ software installed on your computer. If you are continuing to have errors with loading M files, other external issues might be to blame. These other problems include (listed in order from most to least common):
- Invalid M file references in the Windows Registry (the "phonebook" of the Windows Operating System)
- Mistaken removal of the Windows registry M description
- Invalid installation of a M-associated program (eg. Notepad++)
- M file corruption
- The M is infected with a virus
- Device drivers for M-related hardware are out-of-date
- Windows cannot load your MATLAB Source Code File file due to insufficient resources (eg. RAM)
Quiz: Which image file type is the most popular format used on websites?
That's Correct!
PNGs are just slightly more popular than JPEG files (74.5% vs. 72.8% of websites using them) according to usage data from W3Techs.com.
Close, but not quite...
PNGs are just slightly more popular than JPEG files (74.5% vs. 72.8% of websites using them) according to usage data from W3Techs.com.
Poll: What is your favorite audio format?