I think the issues when running Trajec3D under certain regional settings are eventually fully resolved, and was a bit more challenging that expected. Please let me know if you still have issues, but all should be good.
Trajec3D can now be downloaded in two different formats:
Installation file that automatically installs all potential support files that could be required.
ZIP-file of the folder containing all the require files (except the support files). Unzip the file and copy the directory to any location and manually create shortcuts. If the support files is required, download them by running:
DirectX 9.0c End-User Runtime
Microsoft Visual C++ 2008 Redistributable Package (x86)