Scenario 1 crashes after ignition of the Launch Escape System (~200 sec in flight)
Here is the Orbiter.log data, if the may help:
**** WARNING: Mesh not found: .\Meshes\.msh
**** WARNING: Mesh not found: .\Meshes\.msh
>>> ERROR: No vessel class configuration file found for:
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>>> ERROR: Stage
>>> [Vessel::OpenConfigFile | .\Vessel.cpp | 252]
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>>> TERMINATING <<<
Make sure you've installed the meshes into right folder.