# Service Pack 21.50

## Library compatibility information

Library name | Version | Windows | Linux | OS X | Notes
--- | --- | --- | --- | --- | ---
DGN Direct | 3.8.1 |  |  |  |
HOOPS Exchange | 2016 SP2 |  |  |  |
HOOPS Publish | 2016 SP2 |  |  |  |
.NET Framework | 4.0 |  |  |  | v4.5 required for wpf_image v4.5 required for WPF over Remote Desktop
Parasolid | 28.1 |  |  |  |
Qt | 4.4.1 |  |  |  |
RealDWG | 2017, 2016 |  |  |  | RealDWG 2017 is supported in Visual Studio 2015 RealDWG 2016 is supported in Visual Studio 2012 There is no support for RealDWG in Visual Studio 2013
SketchUp | 2015 |  |  |  |

HOOPS Visualize 21.50 is a bug fix release only.