Matlab filename.m run error

I've started learning and using MATLAB. Installed version 7.9.0 (R2009b). After learning few basics, moved to .m files. I created a file named 1.m and trying to run the file. But I couldn't. The error message is

" File C:\Users\RaviTeja\Documents\MATLAB\1.m is not found in the current directory or on the matlab path. "

It also offers some explanation i.e

" To run this file, you can either change the MATLAB current directory or add its directory to the MATLAB path "


Actually this error message and explanation, both are misleading in my case.

There are three things you need to check. They are :

1. Change current directory to the file directory i.e to  C:\Users\RaviTeja\Documents\MATLAB\ in my case. If this is done, skip to step 3.
2. Even by ignoring the above step, you can proceed. Goto file --> Set Path --> Add Folder --> select the folder in which your files are stored. This is preferable.
3. File-names with .m as extension should start with a letter. This is the wrong step I did. So renaming my file 1.m to a.m solved my problem. Surely, this works for you .

PS : I'll start posting the errors which I've encountered daily from now on. Keep visiting

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