This section contains a list of some commonly encountered problems and their solutions. If you have any other questions or comments, please send an e-mail to or go to the Support page on our web site at

SansGUI cannot load the Unit Conversion DLL file

When you click on the Check Data button in a Properties dialog, the following message is shown:




This means that you don't have the DLL file properly installed. You can either copy the DLL file to the location indicated (preferred), or enter the path of the DLL file in the simulation control object. See the Using Unit SimControl Objects section for more details.

Problems occurred when using Unit Conversion with SansGUI version 1.0 without Patch 1

Here is a list of problems that may occur when you use Unit Conversion with SansGUI version 1.0 without installing Patch Level 1. Please download SansGUI 1.0 Patch Level 1 from ProtoDesign's web site to update SansGUI to version 1.0.1.

Once SansGUI version 1.0.1 is installed, all the problems listed above will be solved.

Cannot load Unit Conversion 1.1 files with the Demonstration Edition of SansGUI 1.0.x.

When you load any Unit Conversion for SansGUI version 1.1 file into the Demonstration Edition of SansGUI version 1.0 with any patch numbers, an error occurs:


When the message is displayed, you have two choices:


Welcome to Unit Conversion for SansGUI Specifying File Paths Notes for Simulation Developers

Unit Conversion for SansGUI Version 1.1

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