Import of large XML file doesn't work

Hi there, I am trying to import an xml file that I created using the Vertabelo Reverse Engineering tool. However, when I try to import it, nothing seems to happen when I click the import button.

The file is rather large, the database that I reverse engineered it from has 600+ tables with 10000+ columns, 600+ views and 1000+ references resulting in an xml file of ~17MB.

I reverse engineered a subset of tables from the same database giving a much smaller file and that imported with no problems so I'm wondering if it is a size issue. Is there a maximum allowed size of the import file?

Thanks

Nick