Pano2VR 3b4 - Error message when adding HTML/CSS (solved)

[Wim.Koornneef]

Perhaps there is something wrong at my side but as soon as I start a new project (with the default template set to the factory default) and choose "HTML5/CSS3" from the output then as soon as I hit the "Add" button I get a warning "Template form: Exception: SyntaxError: Parse error in line form.addLine()"

What can I do about it (I am on OSX)

Wim

UPDATE:
I found the cause of the error message, when Pano2VR is adding new output (or opening the settings of a previous added output) then it check the folder with html templates for valid templates (.ggt files).
In the html5 template folder is a not yet finished customized template with an error in it, I knew that the template was not OK yet but I didn'd expect a check for it because I had reset Pano2VR to the default settings....