Is there a way to repair or update WorldServer Components?

Question

In Windows 10 and Studio 2015 when trying to make a return package I get the following message: 
 "Sdl.TranslationStudio.Plugins.WorldServerTranslationProvider.Api, Version=12.0.0.0, Culture=neutral, PublicKeyToken=c28cdb26c445c888" 
 I have tried to repair Studio 2015 but this did not solve the problem, the message keeps appearing. Maybe repairing the WorldServer components will fix the issue? 
 Any help would be thanked.

Walter Blaser · Answer

Annette Have you tried - as already suggested - to reinstall the SR1.1 patch (which includes a patch for the WorldServer component)? Walter

Trados Studio > 1. Trados Studio

Is there a way to repair or update WorldServer Components?