Problems with Js file urls

Hello, I wanted to try the 2.0.1 plugin version on my local multisite install but on the /wp-admin/widgets.php page I got a ‘Uncaught TypeError: undefined is not a function’ Js error thrown by the cs-min.js file. It is caused by the Tiny Scrollbar plugin not loaded by browser because its file url it is not correct; this is as it appears in the page source:

<script type='text/javascript' src='https://mgiulio.wp-labs.devC:Dropboxmgiulioprjexswp-labsappwp-contentpluginscustom-sidebarsincexternalwpmu-lib/js/wpmu-ui.min.js?ver=3.9.1'></script>
<script type='text/javascript' src='https://mgiulio.wp-labs.devC:Dropboxmgiulioprjexswp-labsappwp-contentpluginscustom-sidebarsincexternalwpmu-lib/js/tiny-scrollbar.min.js?ver=3.9.1'></script>
<script type='text/javascript' src='https://mgiulio.wp-labs.devC:Dropboxmgiulioprjexswp-labsappwp-contentpluginscustom-sidebarsincexternalwpmu-lib/js/select2.min.js?ver=3.9.1'></script>
<script type='text/javascript' src='https://mgiulio.wp-labs.dev/wp-content/plugins/custom-sidebars/js/cs.min.js?ver=3.9.1'></script>

P.S.: I run PHP 5.4.7
https://www.ads-software.com/plugins/custom-sidebars/