The following options are available to solve this problem:
a) Make sure your system has sufficient storage space.
b) Deactivate the export of “images” and “lines as background image” under “Format — format options” in profile settings in order not to export any graphic images and to keep file sizes smaller.
c) Export the document in stages (pages 1 – 100, pages 101 – 200, etc.). You can set the page ranges you require in the profile options in the index card “Ranges” tab.