Known issues in the T-Splines Rhino plugin version 2

Updated May 13, 2009

We have a few instances of large files that had no issues in beta 3, which do not open in 2.0. This has been fixed internally, and will be released in 2.1. If you experience this problem and would like to use our internal build, email us at This e-mail address is being protected from spambots. You need JavaScript enabled to view it

Dragging grips is slow, especially on large models, if you have the "Point" Osnap and/or "Mid" Osnap turned on.

There are several issues with symmetric T-Splines

• Attempting to move a symmetric object away from the origin will distort it in many cases
• Selections are sometimes scrambled when a symmetric topological operation is performed
• When using Exact mode in any command that supports it, symmetry will be lost.

In wireframe mode on some graphics cards the Heads-Up Display goes black.

If tsStandardize is run on a model with symmetry enabled, the model will crash. Turning off symmetry will allow tsStandardize to be run.

The Insert Point command does not have a method for extending T-junctions when inserting in Simple mode.

UV/texturing information in imported OBJ files is not preserved. Exported T-Splines have default NURBS-style UVs.

If you are using an earlier Service Release of Rhinoceros (pre-SR4), the manipulators will crash when dragging grips. You should upgrade to the latest Service Release of Rhinoceros to use T-Splines.

Sometimes the currently highlighted grip is not the one selected when you click. This problem seems to be related to OSnap being turned on.

We will work to address these issues in free 2.0 service releases. If you find other issues as well, please let us know by posting them to http://www.tsplines.com/forum or sending them to This e-mail address is being protected from spambots. You need JavaScript enabled to view it . Where possible, including screenshots and test models is very helpful. Thank you!