Please delete folder fonts sub folder of assets folder and also rename mavenProLight.otf instead of MavenProLight-100.otf. then try this.
TextView tv = (TextView) findViewById(R.id.profil_fullname);
Typeface tf = Typeface.createFromAsset(getAssets(), "mavenProLight.otf");
tv.setTypeface(tf);
May be get works 100%. Best of luck!