I can't import from collection studio

I've got an old computer with WinXP and i've changed for a mac. I was using collection studio but it doesn't work in mac. I was searching for a new program and opennumismat has all the requieraments but when i try to import my xml files from collection studio i can't.

OpenNumismat after few seconds when i see a progess bar, it freezes, let me the only option to cancel the import or quit the program.

I was using collection studio 3.59
I'm trying to use OpenNumismat 1.5.3 for a mac

Also I've created a new collection with only 1 coin but i haven't neither be able to import.

Thank you