After installing the update bootstrap 3.0.1 in Dreamweaver CC (Mac) it seems that the first tutorial project with the 4 subheadings gave a problem: in all other views except "extra small device", the 4 subheadings are not anymore equaly divided over the total container-width. There's a big space at the rightside of the most right subheading.

Hello Roel,
I am not sure i understand what exactly the issue is. Can you please provide a link to your page in order for me to check it?

Hello Teodor,
I just published the test-site complete to my webhosting account to show you the problem....and guess? The problems has disappeared. It seems to be only visible when I use the "local" previewfunction in the browserselection of Dreamweaver. The described problem is visible in Firefox and Safari.

Can you please double check that your are not just opening the html file from any folder on your computer by clicking it, but have a site defined with a testing server in your Dreamweaver?
If the links in the browser are like: file:///D:/folder/subfolder/file.html this means you do not have a testing server defined and the page preview won't work.

You are right, that solved the problem. Thanks for the great support!