I've tried close and open the program again, reboot the computer and reintall the program but the problem persist.
I usually worked with the preview button to see how the banner was looking in the browser
is there a way to fix this issue?
I sent you the banner files to the mail you provided me, I hope you find what's wrong.
I'm using windows 8.1
first of all disable any addblocks you have, i have both addblock and addblock plus installed. for me, disabling addblock plus allows the preview to show
secondly and more important, the preview doesn't generate the gwd_webcomponents_min.js file. a quick google search took me to
https://github.com/niutech/gwdcomponents/blob/gh-pages/gwd_webcomponents_min.js
copy the code into a new .js file (name it gwd_webcomponents_min.js) within the preview directory (or use the file I've attached) and it should work