I just posted this on the ConBuilder Support Forum after helping a couple of ConBuilder users with their install of Shape Viewer. Decided to post it here also.
Attention anyone setting up a new PC or a new hard disk:
DO NOT use this file from the Train-Sim library to reinstall Shape Viewer:
MSTS Shape File Viewer v2.5
Name: shapefileviewer25.zip
Size: 4,812,105 Date: 01-02-2016 Downloads: 582
MSTS Shape File Viewer v2.5. An update for the Paul Gausden Shape Viewer v2.2 with new HD grass, new HD grid, and 3DTrains. com ScaleRail TC_DisplayBase. Registry file included. By Natsumi.
Why? For one it is NOT an official release. Second it is NOT an upgrade of Shape Viewer from version 2.2.237. But the most important is, it is not an installer and, although the Visual Basic DLL files used by Shape Viewer are included in the ZIP, the DLL files do not get registered in the Windows registry. This results in Visual Basic error when you try to run it.
Instead get this file from the T-S file library:
MSTS Shape Viewer 2.2.237
Name: sview22.zip
Size: 3,203,784 Date: 04-10-2008 Downloads: 7,234
MSTS Shape Viewer 2.2.237. A viewer for MSTS and TRS Model files. Mostly bug fixes and a few extra keyboard controls. Uninstall any previous versions first. See readme.txt for info on changes. By Paul Gausden