When trying to export the data to *.mat format we can come across many different errors, because of the incorrect settings which can be easily fixed. 

1.) When the error on the following picture occur Matlab doesn't have administration rights for accessing the folder where the exported data is being stored.

A simple test can be performed to acknowledge the correct information about the folder accessibility.

In the Dewesoft settings check the path of the folder where all the exported data is being stored.

Go to the folder destination and try to create a new Folder. If there is a Administration rights sign beside the Folder option, means that some administration rights are needed. 

Creating the export folder in the path, where the administration rights aren't needed should resolve the trouble with Matlab export. 

2.) The other very common trouble is when Matlab path isn't added in the "enviroment variables".

3.) Another source of the issue could be the folder name. If you're using Matlab 2018b or Matlab runtime 9.5 you can't have a space in the export path name (e.g. C:\Dewesoft\Export\Matlab Export). For older versions this should not be an issue.

Issue start: Matlab 2018b

Issue fix: Dewesoft X3 SP7 RC-190429