I can guess what's wrong if these arrows are from the 'Cascading' style. The control keeps an internal variable for each arrow that keeps track whether the arrow starts horizontally or vertically, i.e. the orientation of the first segment. UpdateFromPoints does not set that variable, but you can explicitly set it with the following work-around:

- First set arrow.PrpStartOrientation = Orientation.Auto;
- Next set arrow.PrpStartOrientation = either Orientation.Horizontal or Orientation.Vertical depending on how you need the arrow to start;
- Next set the control point coordinates and call UpdateFromPoints();

We are releasing version 4.0.3 tomorrow, we'll add a fix for that there.

Hi,

We sent the upgrades last week. Please look for the upgrade message at the email address your company has registered with us. Or email me your order ID, company name and an email address where you wish to receive upgrades and I will send you a download link.

Stoyan