Unable to edit any microflow, screens

Hi, i am unable to edit any existing or new microflow, screens to place widgets. Studio is creating the microflow, screens but i am not able to edit or add widgets. I am using 10.8.1. I tried the latest 10.11.0, still this problem persist. Any help would be appreciated.    Mendix installed on my laptop connected to my personal home wifi network.
1 answers

It's difficult to add the screen shot. for example when I add a microflow, i do not see the Start and end nodes and i cannot drag and drop the start and end nodes from the right side pane from the widgets on to the canvas as its read only. Hope this helps.