Resolution

I managed to sort it, although I still don't understand why NT6 was telling me it was a duplicate class names anyway. The only workaround I could come up with was to rename the class under 'Group Names' within each block so that one block the class was name'A' and in another 'A.' ...... that's A with a full stop added to the group name. This solved it

Have received the following error report in NT6 v6.41 Build 1 I'm used to seeing an error when reporting duplicate group names and can always spot what I've done wrong, but not this time. These are the blocks NT6 has an issue with: The problem only seems to come about when more than one subject is added to a block - so if I just had, say English in the English Block and Maths in Maths Block, then that returns no error. As soon as I add in more than one subject - BOING! Any suggestions gratefully received - I've seen mention of a patch from SIMS - if correct, how do I identify it.