Hi, I appreciate this post was from back in February but did you ever manage to get a workaround / resolution to this issue? I appear to be having the exact same. Reached the Performance Testing of the latest STEP guide and I'm getting a crash to desktop when launching via SKSE in MO. Very similar issues:
[2023-10-03 11:47:21.279] [Global] [info] [14500] [Introspection.cpp:1504] Found unhandled type: (PlayerCharacter*) .?AV?$BSTEventSink@UTESTrackedStatsEvent@@@@
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[2023-10-03 11:47:21.294] [Global] [info] [13416] [PdbHandler.cpp:193] Failed to open pdb for dll C:/WINDOWS/System32/KERNELBASE.dll+015BB40 Unable to locate PDB
Possibly a permissions issue? But I don't recall reading anywhere that it required Administrative permissions to run..