Hi there,
here is my problem, I got working hotspot for our employes and want to generate some vouchers for them, to can keep track on there usage.
But when i try generate them it appears this error on on the pop-up where should the printable version of the vouchers be. No difference if i try CVS or my own template or download them as file.

Any Ideas ...

P.S. The same error on "Reports" generation.

I have seen issues with IE9. Try the same tasks using mozilla Firefox

UM interface is very buggy under IE. I use Chrome with good results. If you reset the Voucher code to default does it work OK? I ask because I found editing the voucher template code directly in UM with IE breaks it.