It's all good.

Follow these easy steps using the .ma you attached....


1. delete the object you beveled leaving just the curves.

2. press the 3 key so see the curves smoothed (has no effect on the bevel)

3. open the bevel plus options

4. select reset settings

5. for your curves use:

bevel width .01
bevel height .01
extrude distance .1

these just happen to be good starting values for your curves so they are not all over lapping. You can extrude with the default settings then change bevel width, height, and extrude depth in the channel box. This is my preferred way to work. This way your settings stay at the default all the time.

6. this is the critical step....

open the output option tab and make sure polygon is selected. It should be the default and since you reset the settings it should be selected.

now here is the key step - change the tessellation method from sample to count and just leave the default setting of 200.

7. press apply....and bingo...



and here is what you get upping the count to 400. Smooth enough?