1. This HotFix only for CATIA V5-6R2014 SP4! To install it, you must have pre CATIA V5-6R2014 SP4! 2. To start CATIA V5-6R2014 SP4 HF16, you must install the license server 1. Install CATIA V5-6R2014 SP4 HotFix16 Update 2. Install DS License Server 09032015 ATTENTION! For more info about DSLS Administration see DSLS.pdf 2.1. Uninstall previous versions of DSLS (if exist)