Being new to this I found the expression I wanted on here and then copy-and-pasted it into BRU, and it wouldn't work.
When I copy-and-pasted it into Notepad, and then copy-and pasted it from there into BRU it worked beautifully, provided I made sure that I didn't copy the spaces at the end of expression in Notepad.
Probably this is something you all know, but for inexperienced people (like me) it's quite a pitfall, especially those dyslexics like me who cannot copy accurately.
This is a super program .. thank you so much!