New wording on coupons

I've noticed that some of the newer coupons state not to be used in conjunction with any other coupon offer, promotion or discount.... anyone have troubles using them with sales? I haven't tried yet, and haven't noticed any other comments on this

yes, I did run into that problem at Zellers......tried to use a coupon on a sale item. When i went back the next day I decided to inquire about this further and I was told I could definitely use the coupon with the sale item.

thanks!!!!