Hi, you can only add files in a project not bigger than 20 MB or, for Powerpoint file, 400 MB. This is two low. We get PPTX file that are much bigger (over 1 GB, sometimes 20 GB, because there are many pictures). 

The suggestion from support to split the files is time consuming. The alternative is to create a project, take the sdlxliff file and create a new project with only the SDLXLIFF file and save it to the cloud. By opening the file in Studio, the program will ask for the original file but you can dismiss the request. At the end you need to copy the translated sdlxliff file to the first project and generate the target file. This is also time consuming, but lesser then to split the file in 10 or 20 files.

Thanks,

Angelo