Thanks for your report.
I have sent you an email with a debug version of WinSCP to address you have used to register on this forum.

Running WinSCP from bat file:
""C:\Program Files (x86)\WinSCP\winscp.com" /script="C:\Program Files (x86)\WinSCP\WinSCP_Script.txt" /log="C:\Log\log.txt""

Half the time I see this application crash:

Problem signature:
Problem Event Name: BEX
Application Name: WinSCP.exe
Application Version: 5.5.6.4746
Application Timestamp: 00000000
Fault Module Name: CFGMGR32.dll
Fault Module Version: 6.1.7601.17621
Fault Module Timestamp: 4ddb8851
Exception Offset: 0000125d
Exception Code: c0000005
Exception Data: 00000008
OS Version: 6.1.7601.2.1.0.16.7
Locale ID: 1033
Additional Information 1: a7aa
Additional Information 2: a7aa91f17ea749d42a4de3b390fa5b3d
Additional Information 3: a7aa
Additional Information 4: a7aa91f17ea749d42a4de3b390fa5b3d

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