I have cure on a different macro entirely.
The macro's work like this, casts from top to bottom but tries to cast the last spell as a queued spell. So if you have 6 spells 1 through 6 and you push the button it will try to cast 1 and queue up 6. If you let them go through and hit the button again it will try and cast 2 and then 6. If you spam the button it may cast 1 then 2 then 3 before it has a chance to cast spell 6. The way to get past this annoyance is to just put the same spell on both 1 and 6.
Also the cure spell is messing you up, because it attempts to cast it and when it finishes it says nothing needs to be cured. So it will just keep recasting it over and over and over.
Also watch out some spells have a really low recast on them so you may not even get through your entire spell list because some spell is already refreshed.
Hope that helps.