MATLAB: Do I receive a “Permission denied” error when I try to save the Simulink model files in Simulink 7.0 (R2007b)

bakdeniedmdlpermissionsimulink

When I open a Simulink model file, make some changes and then immediately try to save the file, I receive the following error:

 “Error renaming mymodel.mdl to mymodel.bak. Permission denied”.

However, if I wait for about 30 seconds and try to save the file again, the error does not occur. This happens whether or not I have pre-save and post-save callback defined for the models.

Best Answer

If the option to show M and MDL-file descriptions is turned on in the current directory section of the user’s preferences, the MATLAB desktop will temporarily lock the files in the current directory to obtain these file descriptions. If the save event for the model file occurs at the same time, then the user can receive the permission denied error.

To workaround this issue, please try unchecking the option 'Show M and MDL file Descriptions' in MATLAB File menu -> Preferences -> Current Directory.

Related Solutions

MATLAB: Is MATLAB 7.0.4 (R14SP2) unable to recognize the files, when I use the COPYFILE command in the script

This bug has been fixed in Release 14 Service Pack 3 (R14SP3). For previous product releases, read below for any possible workarounds:

This has been verified as a bug in MATLAB 7.0.4(R14SP2) in the way COPYFILE notifies MATLAB about the changes made to a destination directory.

The followings are some workarounds to resolve the issue:

1. Using an absolute path name:

Use an absolute path name as an input to functions(TYPE in this case) accessing the destination directory as follows:

FullPathTempDir = tempname; 
[temp_dir temp_file] = fileparts(FullPathTempDir); 
mkdir(FullPathTempDir); 
destinationFile = [temp_file,'.m']; 
origPath = addpath(FullPathTempDir); 
copyfile('hSampleDisp.m',fullfile(FullPathTempDir,destinationFile)); 
type(fullfile(FullPathTempDir,destinationFile));

2. Use WHICH or EXIST on the path of the destination directory as follows:

FullPathTempDir = tempname; 
[temp_dir temp_file] = fileparts(FullPathTempDir); 
mkdir(FullPathTempDir); 
destinationFile = [temp_file,'.m']; 
origPath = addpath(FullPathTempDir); 
copyfile('hSampleDisp.m',fullfile(FullPathTempDir,destinationFile)); 
which temp_file
type(temp_file);

3. CD to the directory, in which the file is located, before accessing the file.

MATLAB: Does the installation on OS X fail after the download part with “Permission denied”

This is caused by antivirus software locking onto the .tmp file. As a workaround, temporarily disable your antivirus software and retry the download.

Best Answer

Related Solutions

MATLAB: Is MATLAB 7.0.4 (R14SP2) unable to recognize the files, when I use the COPYFILE command in the script

MATLAB: Does the installation on OS X fail after the download part with “Permission denied”

Related Question