Getting a System.OutOfMemoryException when saving a large sdlxliff

Hi all:

I am getting this error when saving a large sdlxliff file: System.OutOfMemoryException

At the beginning, I was using a Windows 7 32bits OS with 2,5 GB RAM and quad-core processor. I thought more RAM memory was needed. I have switch to another computer which has a Windows 7 64 bits OS, 8GB RAM and quad-core processor and still getting the same error when saving the file.

By the way, both machines uses Trados Studio 2015

Thanks in advance for your help.