Cannot export XLSForm

Using ODK Build 532f8f781d070b6e82a2cf0ca7b3d454ec0ec7a3

I'm unable export XLSForms. Tried different forms, browers and PCs and "Something went wrong..." message pops up everytime.

Just created a single question (text - left at defaults) form, saved it then attempted exporting to XLSForm. Same problem.

I can see this problem has occurred previously but there is nothing within the earlier postings to help unravel the problem.

Can someone please advise.