Error occurs while running the app.

The specified path , filename or both are too long, the fully qualified file name less than 260 characters and directory name must be less than 248 characters in mendix studio pro
1 answers

You'll have to check where your project is saved: if the path is too long, try to place the project elsewhere or shorten some parts of the directory. For instance, your path might be something like this:

C:\Installed Software\Mendix\SomeSuperlongfoldername\anotherfolder\anotherfolder\someveeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeerylongfoldername\Projects\YourProject-Main

In which case it would help to put the project in one of the higher level folders so that all the long folder names are removed from the path.