adobe pdf resource file

Hi,

We have recently installed adobe DC standard on 2 of our citrix servers. When a user tries to combine PDFs they're getting the error below. We've tried reinstalling the application and have added / removed the plugins for ms office, visual c++ is also installed on the servers. However when we give the user access to adobe XI standard they don't get this issue. Please can you advise what could be causing this issue and if this is a DC specific issue. 

Thanks,

Billy