Various problems with Trados Studio 2015

Hello, 

We are a small number of translators who share projects between us working on Studio 2015. 

Recently we've had similar problems with a number of different projects. The most common one is an inability to save target. There are errors notifying of missing files, the search and replace function cannot be used, the word count doesn't show up in the bottom bar. It often occur when processing word files for a specific client that uses a lot of macros but it is not exclusive to their texts but occurs in several different texts.

Has anyone had similar issues and hopefully a solution?