CMS Made Simple Forums

(Sorry for the double post, I must have posted the original to the wrong board).

I'm trying to export a design as XML from a newly created site in CMSMS 2.2.2.

The URL is:
admin/moduleinterface.php?mact=DesignManager,m1_,admin_export_design,0&_sk_=d80dc3b38ba0d13705c&m1_design=1

This just gives me a blank page.
If I hit the back button the notification says 'Operation Canceled'.

Has anyone else had this?
Found a solution?

Cheers
Simon66

I have tried exporting Designs from 2 other sites with CMSMS 2.2.2 with different results.

A fresh install with no sample data. No CSS and few core templates exports to XML perfectly.

Another finished 2.2.2 site with multiple CSS and custom Templates gives me an error notification. Image attached.