"Argument out of range" error, FontCreator 8

I am using Font creator 8. When I try to test or export a font I am getting the message “Argument out of range” and it doesn’t proceed further. How can i resolve this issue or How do I find out which argument it is complaining about in order to solve this problem? FontCreator is disappointing me :cry:

This question is once asked earlier too: see http://forum.high-logic.com:9080/t/argument-out-of-range/4299/1
But it didn’t helped!

As recommended in the linked thread — send the project file to Erwin at High-Logic then he can see what the problem is.

Indeed, do send me a message and I’ll provide a link to a more recent version of FontCreator.