It occurs why because the value of radius specified by you for that required object is greater than the distance between two object.
secondly if the two end not merges one another then apply fillet radius zero, then select the 2 edges it may be a [arcto arc]/[line to line]/[arc to line].
The fillet radius zero method is not applicable for spline.
Thanks and Regards
E G S Computers India Pvt. Ltd.
sw.7z.zip 744.3 KB