# Wednesday, 26 August 2015

If you start experiencing the following error while running a transformation that output PDF and your Preview window does not load, you may need to change your Acrobat Reader settings

Exists Stylus Studio and open Acrobat Reader then navigate to Edit -> Preferences… -> Security (Enhanced) and un-check “Enable Protected Mode at startup”, click Yes into the warning dialog then exit Acrobat Reader.

Start Stylus Studio and execute your transformation without errors