Are you flowering your board properly? Too much flour is a bad thing but you need to get the balance right.
Flour will only harm the bread if you work it into the chapatti. Keep your hands light and free when working it. Watch the video very carefully she explains everything in detail. Pity about the measurements, that sucks.
In short:
Flour on hands flour on board. Get the outside of the dough to feel dry but DO NOT disturb what you are rolling - Keep it one mass.
Don't lose faith - Everything can be achieved. Now then where's my curry pot for the 100th time of failing ;D
Naw still no luck, looks like I'll have to buy the buggers as usual 