<p dir="auto">I checked everything but responsive navbar and icons and the files generated (CSS) had not the right stuff.</p>
<p dir="auto">I'm trying to get Bootsrap  through Customize, but every time I get a blank boostrap.css and file error.txt with the error:</p>
<blockquote>
<p dir="auto">A less error occured trying to build your bundle.<br>
You've likely entered an invalid input into the less variable field. Check your syntax and try again!<br>
  thanks!</p>
<p dir="auto">{"type": "Parse", "message": "Syntax Error on line 792", "index": 25106, "filename": "bootstrap.css", "line": 792, "column": 11, "extract ": [" * margin:-5px 0 5px; "," ove rflow: hidden; "," background-color: @ top; "]}</p><p dir="auto"></p>
</blockquote>
<p dir="auto">My Settings: all items marked, except Icons.</p>
<p dir="auto">What is the problem?</p>