MDL Loader: Unable to load library (DLL or MDL shared library)

Problem:

Attempting to load TerraScan or one of the other Terrasolid MDL applications in MicroStation or other supported Bentley application results in an error, “MDL Loader: Unable to load library (DLL or MDL shared library) tscan” in the message center, usually preceded by a “OS could not load c:\terra64\ma\tscan.dll, error 127.”

Unable to Load Library

Probable Resolution #1:

Ensure that you have launched the regular MicroStation, or other supported Bentley application, and not the “High Security” version of the Bentley product. The high security version typically has a lock on the icon.

MicroStation CE Regular vs High Security

Probable Resolution #2:

Ensure that the Terrasolid module(s) were installed using the right-click and “Run as Administrator” option on the setup.exe.

TScan: Install using Run As Administrator

Probable Resolution #3:

Ensure that the correct installer was used to install the applicable version of the Terrasolid module for the Bentley application.

  • For MicroStation CONNECT edition, PowerDraft CONNECT Edition, and Open Roads Designer CONNECT edition, be sure to use the CE installers, “tscan_CE_eng_018_018”.
  • For MicroStation v8i, be sure to use the v8i installers, “tscan_v8i_eng_018_018”.
  • For MicroStation v8, be sure to use the v8 installers, “tscan_v8_eng_018_018″.
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